Cysylltau cyflym:
yn ôl math o eiddo
yn ôl statws y prynwr
yn ôl statws cyllido
yn ôl statws yr eiddo
Ystadegau Prisiau Tai
Math o eiddo
Tracio’r mynegai, pris cyfartalog a’r newid misol a blynyddol ar gyfer pob math o eiddo neu ganolbwyntio ar un penodol.
Dyddiad
|
Pob math o eiddo
|
Tai ar wahân
|
Tai pâr
|
Tai teras
|
Ionawr 1980
|
24037.0
|
|
|
|
Chwefror 1980
|
24037.0
|
|
|
|
Mawrth 1980
|
24037.0
|
|
|
|
Ebrill 1980
|
25274.0
|
|
|
|
Mai 1980
|
25274.0
|
|
|
|
Mehefin 1980
|
25274.0
|
|
|
|
Gorffennaf 1980
|
25451.0
|
|
|
|
Awst 1980
|
25451.0
|
|
|
|
Medi 1980
|
25451.0
|
|
|
|
Hydref 1980
|
25930.0
|
|
|
|
Tachwedd 1980
|
25930.0
|
|
|
|
Rhagfyr 1980
|
25930.0
|
|
|
|
Ionawr 1981
|
24870.0
|
|
|
|
Chwefror 1981
|
24870.0
|
|
|
|
Mawrth 1981
|
24870.0
|
|
|
|
Ebrill 1981
|
26511.0
|
|
|
|
Mai 1981
|
26511.0
|
|
|
|
Mehefin 1981
|
26511.0
|
|
|
|
Gorffennaf 1981
|
26258.0
|
|
|
|
Awst 1981
|
26258.0
|
|
|
|
Medi 1981
|
26258.0
|
|
|
|
Hydref 1981
|
26410.0
|
|
|
|
Tachwedd 1981
|
26410.0
|
|
|
|
Rhagfyr 1981
|
26410.0
|
|
|
|
Ionawr 1982
|
24567.0
|
|
|
|
Chwefror 1982
|
24567.0
|
|
|
|
Mawrth 1982
|
24567.0
|
|
|
|
Ebrill 1982
|
26410.0
|
|
|
|
Mai 1982
|
26410.0
|
|
|
|
Mehefin 1982
|
26410.0
|
|
|
|
Gorffennaf 1982
|
26890.0
|
|
|
|
Awst 1982
|
26890.0
|
|
|
|
Medi 1982
|
26890.0
|
|
|
|
Hydref 1982
|
27773.0
|
|
|
|
Tachwedd 1982
|
27773.0
|
|
|
|
Rhagfyr 1982
|
27773.0
|
|
|
|
Ionawr 1983
|
28278.0
|
|
|
|
Chwefror 1983
|
28278.0
|
|
|
|
Mawrth 1983
|
28278.0
|
|
|
|
Ebrill 1983
|
29036.0
|
|
|
|
Mai 1983
|
29036.0
|
|
|
|
Mehefin 1983
|
29036.0
|
|
|
|
Gorffennaf 1983
|
30298.0
|
|
|
|
Awst 1983
|
30298.0
|
|
|
|
Medi 1983
|
30298.0
|
|
|
|
Hydref 1983
|
31056.0
|
|
|
|
Tachwedd 1983
|
31056.0
|
|
|
|
Rhagfyr 1983
|
31056.0
|
|
|
|
Ionawr 1984
|
31561.0
|
|
|
|
Chwefror 1984
|
31561.0
|
|
|
|
Mawrth 1984
|
31561.0
|
|
|
|
Ebrill 1984
|
34590.0
|
|
|
|
Mai 1984
|
34590.0
|
|
|
|
Mehefin 1984
|
34590.0
|
|
|
|
Gorffennaf 1984
|
35348.0
|
|
|
|
Awst 1984
|
35348.0
|
|
|
|
Medi 1984
|
35348.0
|
|
|
|
Hydref 1984
|
36105.0
|
|
|
|
Tachwedd 1984
|
36105.0
|
|
|
|
Rhagfyr 1984
|
36105.0
|
|
|
|
Ionawr 1985
|
35853.0
|
|
|
|
Chwefror 1985
|
35853.0
|
|
|
|
Mawrth 1985
|
35853.0
|
|
|
|
Ebrill 1985
|
38883.0
|
|
|
|
Mai 1985
|
38883.0
|
|
|
|
Mehefin 1985
|
38883.0
|
|
|
|
Gorffennaf 1985
|
39640.0
|
|
|
|
Awst 1985
|
39640.0
|
|
|
|
Medi 1985
|
39640.0
|
|
|
|
Hydref 1985
|
41913.0
|
|
|
|
Tachwedd 1985
|
41913.0
|
|
|
|
Rhagfyr 1985
|
41913.0
|
|
|
|
Ionawr 1986
|
43427.0
|
|
|
|
Chwefror 1986
|
43427.0
|
|
|
|
Mawrth 1986
|
43427.0
|
|
|
|
Ebrill 1986
|
46962.0
|
|
|
|
Mai 1986
|
46962.0
|
|
|
|
Mehefin 1986
|
46962.0
|
|
|
|
Gorffennaf 1986
|
48982.0
|
|
|
|
Awst 1986
|
48982.0
|
|
|
|
Medi 1986
|
48982.0
|
|
|
|
Hydref 1986
|
52517.0
|
|
|
|
Tachwedd 1986
|
52517.0
|
|
|
|
Rhagfyr 1986
|
52517.0
|
|
|
|
Ionawr 1987
|
53779.0
|
|
|
|
Chwefror 1987
|
53779.0
|
|
|
|
Mawrth 1987
|
53779.0
|
|
|
|
Ebrill 1987
|
56809.0
|
|
|
|
Mai 1987
|
56809.0
|
|
|
|
Mehefin 1987
|
56809.0
|
|
|
|
Gorffennaf 1987
|
60596.0
|
|
|
|
Awst 1987
|
60596.0
|
|
|
|
Medi 1987
|
60596.0
|
|
|
|
Hydref 1987
|
65386.0
|
|
|
|
Tachwedd 1987
|
65386.0
|
|
|
|
Rhagfyr 1987
|
65386.0
|
|
|
|
Ionawr 1988
|
67356.0
|
|
|
|
Chwefror 1988
|
67356.0
|
|
|
|
Mawrth 1988
|
67356.0
|
|
|
|
Ebrill 1988
|
70901.0
|
|
|
|
Mai 1988
|
70901.0
|
|
|
|
Mehefin 1988
|
70901.0
|
|
|
|
Gorffennaf 1988
|
76021.0
|
|
|
|
Awst 1988
|
76021.0
|
|
|
|
Medi 1988
|
76021.0
|
|
|
|
Hydref 1988
|
81536.0
|
|
|
|
Tachwedd 1988
|
81536.0
|
|
|
|
Rhagfyr 1988
|
81536.0
|
|
|
|
Ionawr 1989
|
77991.0
|
|
|
|
Chwefror 1989
|
77991.0
|
|
|
|
Mawrth 1989
|
77991.0
|
|
|
|
Ebrill 1989
|
81930.0
|
|
|
|
Mai 1989
|
81930.0
|
|
|
|
Mehefin 1989
|
81930.0
|
|
|
|
Gorffennaf 1989
|
80748.0
|
|
|
|
Awst 1989
|
80748.0
|
|
|
|
Medi 1989
|
80748.0
|
|
|
|
Hydref 1989
|
78385.0
|
|
|
|
Tachwedd 1989
|
78385.0
|
|
|
|
Rhagfyr 1989
|
78385.0
|
|
|
|
Ionawr 1990
|
79909.0
|
|
|
|
Chwefror 1990
|
79909.0
|
|
|
|
Mawrth 1990
|
79909.0
|
|
|
|
Ebrill 1990
|
77318.0
|
|
|
|
Mai 1990
|
77318.0
|
|
|
|
Mehefin 1990
|
77318.0
|
|
|
|
Gorffennaf 1990
|
81243.0
|
|
|
|
Awst 1990
|
81243.0
|
|
|
|
Medi 1990
|
81243.0
|
|
|
|
Hydref 1990
|
75827.0
|
|
|
|
Tachwedd 1990
|
75827.0
|
|
|
|
Rhagfyr 1990
|
75827.0
|
|
|
|
Ionawr 1991
|
76848.0
|
|
|
|
Chwefror 1991
|
76848.0
|
|
|
|
Mawrth 1991
|
76848.0
|
|
|
|
Ebrill 1991
|
75199.0
|
|
|
|
Mai 1991
|
75199.0
|
|
|
|
Mehefin 1991
|
75199.0
|
|
|
|
Gorffennaf 1991
|
75906.0
|
|
|
|
Awst 1991
|
75906.0
|
|
|
|
Medi 1991
|
75906.0
|
|
|
|
Hydref 1991
|
73394.0
|
|
|
|
Tachwedd 1991
|
73394.0
|
|
|
|
Rhagfyr 1991
|
73394.0
|
|
|
|
Ionawr 1992
|
73394.0
|
|
|
|
Chwefror 1992
|
73394.0
|
|
|
|
Mawrth 1992
|
73394.0
|
|
|
|
Ebrill 1992
|
67506.0
|
|
|
|
Mai 1992
|
67506.0
|
|
|
|
Mehefin 1992
|
67506.0
|
|
|
|
Gorffennaf 1992
|
67303.0
|
|
|
|
Awst 1992
|
67303.0
|
|
|
|
Medi 1992
|
67303.0
|
|
|
|
Hydref 1992
|
64787.0
|
|
|
|
Tachwedd 1992
|
64787.0
|
|
|
|
Rhagfyr 1992
|
64787.0
|
|
|
|
Ionawr 1993
|
67574.0
|
|
|
|
Chwefror 1993
|
67574.0
|
|
|
|
Mawrth 1993
|
67574.0
|
|
|
|
Ebrill 1993
|
68934.0
|
|
|
|
Mai 1993
|
68934.0
|
|
|
|
Mehefin 1993
|
68934.0
|
|
|
|
Gorffennaf 1993
|
68254.0
|
|
|
|
Awst 1993
|
68254.0
|
|
|
|
Medi 1993
|
68254.0
|
|
|
|
Hydref 1993
|
67099.0
|
|
|
|
Tachwedd 1993
|
67099.0
|
|
|
|
Rhagfyr 1993
|
67099.0
|
|
|
|
Ionawr 1994
|
67642.0
|
|
|
|
Chwefror 1994
|
67642.0
|
|
|
|
Mawrth 1994
|
67642.0
|
|
|
|
Ebrill 1994
|
73013.0
|
|
|
|
Mai 1994
|
73013.0
|
|
|
|
Mehefin 1994
|
73013.0
|
|
|
|
Gorffennaf 1994
|
73285.0
|
|
|
|
Awst 1994
|
73285.0
|
|
|
|
Medi 1994
|
73285.0
|
|
|
|
Hydref 1994
|
70906.0
|
|
|
|
Tachwedd 1994
|
70906.0
|
|
|
|
Rhagfyr 1994
|
70906.0
|
|
|
|
Ionawr 1995
|
74436.0
|
161449.0
|
95898.0
|
73706.0
|
Chwefror 1995
|
72778.0
|
157449.0
|
96084.0
|
73757.0
|
Mawrth 1995
|
73897.0
|
156090.0
|
94981.0
|
73571.0
|
Ebrill 1995
|
74455.0
|
156932.0
|
95193.0
|
73990.0
|
Mai 1995
|
75432.0
|
158778.0
|
96727.0
|
75063.0
|
Mehefin 1995
|
75606.0
|
158322.0
|
96551.0
|
74684.0
|
Gorffennaf 1995
|
75984.0
|
161896.0
|
97609.0
|
75763.0
|
Awst 1995
|
75529.0
|
160991.0
|
97064.0
|
75103.0
|
Medi 1995
|
74941.0
|
159829.0
|
96135.0
|
74632.0
|
Hydref 1995
|
74302.0
|
160268.0
|
95894.0
|
73292.0
|
Tachwedd 1995
|
74118.0
|
157177.0
|
95155.0
|
73136.0
|
Rhagfyr 1995
|
75178.0
|
158799.0
|
96433.0
|
74254.0
|
Ionawr 1996
|
75342.0
|
159926.0
|
96393.0
|
74754.0
|
Chwefror 1996
|
76087.0
|
159662.0
|
97498.0
|
75122.0
|
Mawrth 1996
|
75691.0
|
161107.0
|
97079.0
|
75029.0
|
Ebrill 1996
|
76767.0
|
160304.0
|
97381.0
|
75761.0
|
Mai 1996
|
77215.0
|
160540.0
|
98333.0
|
76984.0
|
Mehefin 1996
|
78139.0
|
163374.0
|
99096.0
|
76944.0
|
Gorffennaf 1996
|
78799.0
|
167042.0
|
100384.0
|
77796.0
|
Awst 1996
|
79058.0
|
168725.0
|
101125.0
|
78590.0
|
Medi 1996
|
79752.0
|
169961.0
|
101873.0
|
78910.0
|
Hydref 1996
|
79504.0
|
171030.0
|
101781.0
|
78586.0
|
Tachwedd 1996
|
80224.0
|
168697.0
|
102161.0
|
79649.0
|
Rhagfyr 1996
|
81417.0
|
171030.0
|
104399.0
|
80634.0
|
Ionawr 1997
|
83066.0
|
176010.0
|
105732.0
|
82195.0
|
Chwefror 1997
|
83579.0
|
176433.0
|
105446.0
|
82178.0
|
Mawrth 1997
|
84576.0
|
177667.0
|
106903.0
|
83576.0
|
Ebrill 1997
|
86088.0
|
180373.0
|
108927.0
|
84904.0
|
Mai 1997
|
88544.0
|
186373.0
|
112329.0
|
87397.0
|
Mehefin 1997
|
89231.0
|
190062.0
|
113227.0
|
88606.0
|
Gorffennaf 1997
|
92129.0
|
196287.0
|
117350.0
|
91655.0
|
Awst 1997
|
92120.0
|
198166.0
|
118155.0
|
91214.0
|
Medi 1997
|
94180.0
|
203053.0
|
120516.0
|
92998.0
|
Hydref 1997
|
93918.0
|
202832.0
|
120574.0
|
92778.0
|
Tachwedd 1997
|
95034.0
|
206280.0
|
121845.0
|
93593.0
|
Rhagfyr 1997
|
96863.0
|
206669.0
|
124400.0
|
95777.0
|
Ionawr 1998
|
97914.0
|
212537.0
|
124936.0
|
97066.0
|
Chwefror 1998
|
96944.0
|
205692.0
|
123670.0
|
95203.0
|
Mawrth 1998
|
98934.0
|
209210.0
|
125718.0
|
97449.0
|
Ebrill 1998
|
101287.0
|
214790.0
|
128936.0
|
99850.0
|
Mai 1998
|
101077.0
|
212891.0
|
129081.0
|
100178.0
|
Mehefin 1998
|
102891.0
|
216398.0
|
130638.0
|
101331.0
|
Gorffennaf 1998
|
104368.0
|
223821.0
|
133832.0
|
103116.0
|
Awst 1998
|
104078.0
|
226677.0
|
133532.0
|
102886.0
|
Medi 1998
|
104611.0
|
226350.0
|
134219.0
|
103312.0
|
Hydref 1998
|
104179.0
|
225428.0
|
133839.0
|
101990.0
|
Tachwedd 1998
|
104259.0
|
225927.0
|
134036.0
|
101945.0
|
Rhagfyr 1998
|
104785.0
|
221985.0
|
134030.0
|
103013.0
|
Ionawr 1999
|
105695.0
|
226545.0
|
134708.0
|
103316.0
|
Chwefror 1999
|
105273.0
|
225504.0
|
134203.0
|
102843.0
|
Mawrth 1999
|
107398.0
|
227657.0
|
136004.0
|
105074.0
|
Ebrill 1999
|
109621.0
|
232531.0
|
138706.0
|
108147.0
|
Mai 1999
|
111216.0
|
232262.0
|
139800.0
|
109229.0
|
Mehefin 1999
|
113319.0
|
240343.0
|
143345.0
|
111644.0
|
Gorffennaf 1999
|
117033.0
|
249454.0
|
147256.0
|
115453.0
|
Awst 1999
|
119358.0
|
252272.0
|
149578.0
|
117728.0
|
Medi 1999
|
122611.0
|
260347.0
|
152521.0
|
119663.0
|
Hydref 1999
|
123002.0
|
261720.0
|
154879.0
|
119887.0
|
Tachwedd 1999
|
125792.0
|
267166.0
|
158051.0
|
123329.0
|
Rhagfyr 1999
|
127918.0
|
265355.0
|
159147.0
|
124726.0
|
Ionawr 2000
|
130411.0
|
280980.0
|
165413.0
|
127833.0
|
Chwefror 2000
|
132705.0
|
279796.0
|
165391.0
|
129708.0
|
Mawrth 2000
|
134286.0
|
284608.0
|
168433.0
|
131957.0
|
Ebrill 2000
|
140670.0
|
293946.0
|
174235.0
|
136659.0
|
Mai 2000
|
140862.0
|
297670.0
|
176792.0
|
137401.0
|
Mehefin 2000
|
143542.0
|
298774.0
|
179057.0
|
139575.0
|
Gorffennaf 2000
|
146228.0
|
313017.0
|
183384.0
|
142702.0
|
Awst 2000
|
147284.0
|
311885.0
|
184296.0
|
142302.0
|
Medi 2000
|
147316.0
|
314775.0
|
183347.0
|
142656.0
|
Hydref 2000
|
145626.0
|
314817.0
|
184698.0
|
141042.0
|
Tachwedd 2000
|
147666.0
|
314211.0
|
182742.0
|
141687.0
|
Rhagfyr 2000
|
147483.0
|
307562.0
|
182542.0
|
141993.0
|
Ionawr 2001
|
149543.0
|
313677.0
|
185344.0
|
144786.0
|
Chwefror 2001
|
149776.0
|
316859.0
|
187191.0
|
145438.0
|
Mawrth 2001
|
150941.0
|
312590.0
|
186613.0
|
146149.0
|
Ebrill 2001
|
152865.0
|
317568.0
|
187982.0
|
148477.0
|
Mai 2001
|
157156.0
|
320126.0
|
192150.0
|
152402.0
|
Mehefin 2001
|
158760.0
|
321946.0
|
193754.0
|
152838.0
|
Gorffennaf 2001
|
161122.0
|
337102.0
|
199554.0
|
156018.0
|
Awst 2001
|
164628.0
|
340860.0
|
201833.0
|
159357.0
|
Medi 2001
|
164820.0
|
344116.0
|
202792.0
|
159498.0
|
Hydref 2001
|
166189.0
|
348354.0
|
205977.0
|
161134.0
|
Tachwedd 2001
|
167214.0
|
346501.0
|
206766.0
|
161179.0
|
Rhagfyr 2001
|
167693.0
|
340664.0
|
205384.0
|
160381.0
|
Ionawr 2002
|
169841.0
|
352528.0
|
210722.0
|
163445.0
|
Chwefror 2002
|
170502.0
|
347520.0
|
209278.0
|
164721.0
|
Mawrth 2002
|
172749.0
|
351801.0
|
211962.0
|
166555.0
|
Ebrill 2002
|
178218.0
|
359916.0
|
217092.0
|
170602.0
|
Mai 2002
|
182805.0
|
367527.0
|
223779.0
|
175772.0
|
Mehefin 2002
|
186038.0
|
369726.0
|
224529.0
|
178283.0
|
Gorffennaf 2002
|
191162.0
|
389899.0
|
233908.0
|
184737.0
|
Awst 2002
|
195333.0
|
394662.0
|
239197.0
|
189142.0
|
Medi 2002
|
197045.0
|
399194.0
|
242636.0
|
190416.0
|
Hydref 2002
|
199092.0
|
404694.0
|
246998.0
|
192683.0
|
Tachwedd 2002
|
202527.0
|
412507.0
|
248842.0
|
195211.0
|
Rhagfyr 2002
|
203437.0
|
407963.0
|
252359.0
|
196414.0
|
Ionawr 2003
|
207162.0
|
419137.0
|
254641.0
|
202041.0
|
Chwefror 2003
|
206464.0
|
414982.0
|
256602.0
|
200114.0
|
Mawrth 2003
|
205573.0
|
415288.0
|
255085.0
|
199740.0
|
Ebrill 2003
|
207953.0
|
415921.0
|
258067.0
|
201120.0
|
Mai 2003
|
210583.0
|
418968.0
|
261553.0
|
205740.0
|
Mehefin 2003
|
208941.0
|
417655.0
|
259215.0
|
202891.0
|
Gorffennaf 2003
|
213806.0
|
426441.0
|
266051.0
|
208794.0
|
Awst 2003
|
212692.0
|
423770.0
|
264469.0
|
208159.0
|
Medi 2003
|
212901.0
|
428779.0
|
266092.0
|
208553.0
|
Hydref 2003
|
214608.0
|
427660.0
|
267387.0
|
210387.0
|
Tachwedd 2003
|
215556.0
|
425184.0
|
267314.0
|
211536.0
|
Rhagfyr 2003
|
216971.0
|
420852.0
|
267879.0
|
211690.0
|
Ionawr 2004
|
218855.0
|
434342.0
|
271332.0
|
214541.0
|
Chwefror 2004
|
219804.0
|
434984.0
|
273084.0
|
216428.0
|
Mawrth 2004
|
221324.0
|
432135.0
|
271383.0
|
217492.0
|
Ebrill 2004
|
225863.0
|
435578.0
|
278620.0
|
223420.0
|
Mai 2004
|
227330.0
|
430197.0
|
279298.0
|
224193.0
|
Mehefin 2004
|
230156.0
|
438283.0
|
281838.0
|
225947.0
|
Gorffennaf 2004
|
233877.0
|
447529.0
|
288388.0
|
231683.0
|
Awst 2004
|
234836.0
|
452951.0
|
288655.0
|
232422.0
|
Medi 2004
|
234134.0
|
451595.0
|
288161.0
|
231902.0
|
Hydref 2004
|
232287.0
|
448530.0
|
286511.0
|
230059.0
|
Tachwedd 2004
|
234718.0
|
449256.0
|
287896.0
|
231718.0
|
Rhagfyr 2004
|
230185.0
|
441332.0
|
282435.0
|
227556.0
|
Ionawr 2005
|
232422.0
|
448212.0
|
284417.0
|
230578.0
|
Chwefror 2005
|
231321.0
|
442730.0
|
283523.0
|
229239.0
|
Mawrth 2005
|
231263.0
|
440100.0
|
282278.0
|
229777.0
|
Ebrill 2005
|
235367.0
|
443176.0
|
286920.0
|
234290.0
|
Mai 2005
|
235685.0
|
447963.0
|
288344.0
|
233940.0
|
Mehefin 2005
|
235899.0
|
443028.0
|
287519.0
|
235917.0
|
Gorffennaf 2005
|
237872.0
|
449202.0
|
290947.0
|
237279.0
|
Awst 2005
|
237971.0
|
449857.0
|
288600.0
|
237217.0
|
Medi 2005
|
236916.0
|
451638.0
|
290297.0
|
237361.0
|
Hydref 2005
|
234298.0
|
442924.0
|
286183.0
|
234167.0
|
Tachwedd 2005
|
236561.0
|
445427.0
|
288242.0
|
236536.0
|
Rhagfyr 2005
|
238377.0
|
438936.0
|
285358.0
|
237127.0
|
Ionawr 2006
|
239846.0
|
454025.0
|
291590.0
|
240015.0
|
Chwefror 2006
|
239115.0
|
448642.0
|
289915.0
|
238395.0
|
Mawrth 2006
|
241380.0
|
454096.0
|
292056.0
|
241348.0
|
Ebrill 2006
|
245474.0
|
455431.0
|
296200.0
|
245745.0
|
Mai 2006
|
247591.0
|
460366.0
|
297797.0
|
247011.0
|
Mehefin 2006
|
251417.0
|
465913.0
|
301279.0
|
251705.0
|
Gorffennaf 2006
|
253883.0
|
473171.0
|
306203.0
|
255910.0
|
Awst 2006
|
256704.0
|
478540.0
|
308896.0
|
257927.0
|
Medi 2006
|
257541.0
|
483177.0
|
310130.0
|
257836.0
|
Hydref 2006
|
259115.0
|
483203.0
|
311206.0
|
259231.0
|
Tachwedd 2006
|
258814.0
|
484883.0
|
312651.0
|
260129.0
|
Rhagfyr 2006
|
264494.0
|
491261.0
|
316458.0
|
264717.0
|
Ionawr 2007
|
267658.0
|
496475.0
|
319628.0
|
268351.0
|
Chwefror 2007
|
270780.0
|
501729.0
|
322708.0
|
269149.0
|
Mawrth 2007
|
273479.0
|
506544.0
|
325473.0
|
274191.0
|
Ebrill 2007
|
278805.0
|
512600.0
|
330825.0
|
280670.0
|
Mai 2007
|
282726.0
|
515304.0
|
334101.0
|
282458.0
|
Mehefin 2007
|
285958.0
|
524980.0
|
337493.0
|
285874.0
|
Gorffennaf 2007
|
295694.0
|
547759.0
|
350983.0
|
296015.0
|
Awst 2007
|
297653.0
|
546248.0
|
350162.0
|
298971.0
|
Medi 2007
|
298414.0
|
552891.0
|
351709.0
|
297548.0
|
Hydref 2007
|
298559.0
|
555873.0
|
351538.0
|
297591.0
|
Tachwedd 2007
|
297648.0
|
560486.0
|
354894.0
|
296952.0
|
Rhagfyr 2007
|
297994.0
|
551709.0
|
352333.0
|
296305.0
|
Ionawr 2008
|
298596.0
|
562436.0
|
354015.0
|
298254.0
|
Chwefror 2008
|
295700.0
|
552961.0
|
351217.0
|
294639.0
|
Mawrth 2008
|
293605.0
|
547952.0
|
349568.0
|
294811.0
|
Ebrill 2008
|
294346.0
|
557690.0
|
349515.0
|
294697.0
|
Mai 2008
|
295163.0
|
550050.0
|
350758.0
|
295286.0
|
Mehefin 2008
|
290100.0
|
542550.0
|
344894.0
|
291896.0
|
Gorffennaf 2008
|
290261.0
|
546197.0
|
343508.0
|
288804.0
|
Awst 2008
|
281721.0
|
532326.0
|
335791.0
|
281308.0
|
Medi 2008
|
276487.0
|
524235.0
|
326819.0
|
274565.0
|
Hydref 2008
|
266999.0
|
506702.0
|
316158.0
|
262929.0
|
Tachwedd 2008
|
258647.0
|
493046.0
|
308780.0
|
257811.0
|
Rhagfyr 2008
|
253881.0
|
480437.0
|
303686.0
|
253948.0
|
Ionawr 2009
|
253093.0
|
484980.0
|
300817.0
|
250089.0
|
Chwefror 2009
|
249847.0
|
465160.0
|
296380.0
|
247380.0
|
Mawrth 2009
|
247264.0
|
460766.0
|
291834.0
|
244007.0
|
Ebrill 2009
|
245351.0
|
456683.0
|
291883.0
|
243875.0
|
Mai 2009
|
249991.0
|
462317.0
|
295985.0
|
248103.0
|
Mehefin 2009
|
253596.0
|
468537.0
|
299623.0
|
254191.0
|
Gorffennaf 2009
|
259793.0
|
484437.0
|
310207.0
|
261258.0
|
Awst 2009
|
262076.0
|
491850.0
|
314236.0
|
263938.0
|
Medi 2009
|
267501.0
|
497220.0
|
316791.0
|
267705.0
|
Hydref 2009
|
268780.0
|
504815.0
|
321628.0
|
270498.0
|
Tachwedd 2009
|
266837.0
|
501064.0
|
318077.0
|
270130.0
|
Rhagfyr 2009
|
270118.0
|
502617.0
|
323927.0
|
273328.0
|
Ionawr 2010
|
279724.0
|
525410.0
|
335145.0
|
283569.0
|
Chwefror 2010
|
278753.0
|
524431.0
|
335551.0
|
282885.0
|
Mawrth 2010
|
280472.0
|
532768.0
|
335940.0
|
281836.0
|
Ebrill 2010
|
281981.0
|
530526.0
|
337788.0
|
284471.0
|
Mai 2010
|
281762.0
|
532230.0
|
337877.0
|
285520.0
|
Mehefin 2010
|
284541.0
|
536235.0
|
340019.0
|
288347.0
|
Gorffennaf 2010
|
292772.0
|
560177.0
|
351466.0
|
298269.0
|
Awst 2010
|
290646.0
|
552684.0
|
352306.0
|
295010.0
|
Medi 2010
|
290093.0
|
559284.0
|
350133.0
|
294941.0
|
Hydref 2010
|
286131.0
|
548402.0
|
345578.0
|
289873.0
|
Tachwedd 2010
|
282290.0
|
545732.0
|
343402.0
|
284672.0
|
Rhagfyr 2010
|
285353.0
|
545247.0
|
344640.0
|
287916.0
|
Ionawr 2011
|
287983.0
|
561353.0
|
347089.0
|
291581.0
|
Chwefror 2011
|
285227.0
|
556285.0
|
343860.0
|
286549.0
|
Mawrth 2011
|
287092.0
|
559907.0
|
342214.0
|
287434.0
|
Ebrill 2011
|
293993.0
|
556813.0
|
346657.0
|
295121.0
|
Mai 2011
|
284722.0
|
539789.0
|
342357.0
|
286936.0
|
Mehefin 2011
|
285906.0
|
534579.0
|
340812.0
|
287950.0
|
Gorffennaf 2011
|
295843.0
|
555115.0
|
350495.0
|
298117.0
|
Awst 2011
|
294903.0
|
558789.0
|
354046.0
|
299996.0
|
Medi 2011
|
295358.0
|
566622.0
|
353417.0
|
299513.0
|
Hydref 2011
|
292267.0
|
565503.0
|
354002.0
|
294911.0
|
Tachwedd 2011
|
291036.0
|
559120.0
|
348955.0
|
291888.0
|
Rhagfyr 2011
|
292284.0
|
553602.0
|
350948.0
|
294428.0
|
Ionawr 2012
|
294360.0
|
554780.0
|
352985.0
|
297924.0
|
Chwefror 2012
|
292381.0
|
569459.0
|
354995.0
|
297507.0
|
Mawrth 2012
|
290379.0
|
544127.0
|
345599.0
|
294550.0
|
Ebrill 2012
|
299065.0
|
561806.0
|
354724.0
|
301792.0
|
Mai 2012
|
304081.0
|
570424.0
|
361779.0
|
308408.0
|
Mehefin 2012
|
306823.0
|
567821.0
|
361738.0
|
312798.0
|
Gorffennaf 2012
|
308962.0
|
580113.0
|
366704.0
|
315144.0
|
Awst 2012
|
310043.0
|
582142.0
|
368878.0
|
316895.0
|
Medi 2012
|
308469.0
|
579776.0
|
365664.0
|
314230.0
|
Hydref 2012
|
310281.0
|
580841.0
|
367792.0
|
314956.0
|
Tachwedd 2012
|
308540.0
|
579766.0
|
366472.0
|
313951.0
|
Rhagfyr 2012
|
313744.0
|
584430.0
|
368743.0
|
319691.0
|
Ionawr 2013
|
311364.0
|
585417.0
|
371472.0
|
316619.0
|
Chwefror 2013
|
313550.0
|
584924.0
|
369428.0
|
318273.0
|
Mawrth 2013
|
312289.0
|
587252.0
|
369862.0
|
317191.0
|
Ebrill 2013
|
320921.0
|
592752.0
|
374400.0
|
325254.0
|
Mai 2013
|
322324.0
|
600796.0
|
379979.0
|
327099.0
|
Mehefin 2013
|
324518.0
|
600375.0
|
380448.0
|
330385.0
|
Gorffennaf 2013
|
332988.0
|
612056.0
|
388303.0
|
339351.0
|
Awst 2013
|
335743.0
|
621017.0
|
394860.0
|
343054.0
|
Medi 2013
|
340494.0
|
627915.0
|
394236.0
|
346089.0
|
Hydref 2013
|
340045.0
|
629328.0
|
398386.0
|
343921.0
|
Tachwedd 2013
|
343749.0
|
631279.0
|
401464.0
|
348311.0
|
Rhagfyr 2013
|
352028.0
|
632546.0
|
405661.0
|
355889.0
|
Ionawr 2014
|
355830.0
|
651986.0
|
413770.0
|
360184.0
|
Chwefror 2014
|
357876.0
|
657774.0
|
415632.0
|
361192.0
|
Mawrth 2014
|
361400.0
|
656427.0
|
417649.0
|
365214.0
|
Ebrill 2014
|
375337.0
|
688122.0
|
435644.0
|
381773.0
|
Mai 2014
|
382705.0
|
692487.0
|
441186.0
|
388249.0
|
Mehefin 2014
|
387182.0
|
699099.0
|
446329.0
|
393924.0
|
Gorffennaf 2014
|
398737.0
|
728491.0
|
465103.0
|
407975.0
|
Awst 2014
|
404754.0
|
739313.0
|
471552.0
|
414689.0
|
Medi 2014
|
403670.0
|
738828.0
|
468585.0
|
411840.0
|
Hydref 2014
|
402300.0
|
741040.0
|
470849.0
|
410173.0
|
Tachwedd 2014
|
400803.0
|
743115.0
|
472027.0
|
409211.0
|
Rhagfyr 2014
|
402898.0
|
739606.0
|
469349.0
|
409482.0
|
Ionawr 2015
|
402847.0
|
743471.0
|
471904.0
|
408951.0
|
Chwefror 2015
|
404773.0
|
748417.0
|
473702.0
|
410966.0
|
Mawrth 2015
|
404706.0
|
746670.0
|
474072.0
|
410639.0
|
Ebrill 2015
|
410445.0
|
759614.0
|
480438.0
|
419154.0
|
Mai 2015
|
415817.0
|
758190.0
|
485444.0
|
422193.0
|
Mehefin 2015
|
419474.0
|
772089.0
|
493081.0
|
431687.0
|
Gorffennaf 2015
|
431644.0
|
787783.0
|
506181.0
|
443661.0
|
Awst 2015
|
436152.0
|
805864.0
|
514997.0
|
448942.0
|
Medi 2015
|
439729.0
|
820565.0
|
517030.0
|
450734.0
|
Hydref 2015
|
440484.0
|
824799.0
|
525228.0
|
455397.0
|
Tachwedd 2015
|
445485.0
|
828661.0
|
528318.0
|
458454.0
|
Rhagfyr 2015
|
450053.0
|
844884.0
|
536465.0
|
462912.0
|
Ionawr 2016
|
457466.0
|
846956.0
|
546758.0
|
470317.0
|
Chwefror 2016
|
457759.0
|
863896.0
|
550400.0
|
472651.0
|
Mawrth 2016
|
464647.0
|
873391.0
|
549954.0
|
477329.0
|
Ebrill 2016
|
461068.0
|
859832.0
|
551600.0
|
477313.0
|
Mai 2016
|
467485.0
|
864839.0
|
557920.0
|
481745.0
|
Mehefin 2016
|
468120.0
|
885121.0
|
560281.0
|
483455.0
|
Gorffennaf 2016
|
475530.0
|
893103.0
|
572688.0
|
493363.0
|
Awst 2016
|
471957.0
|
889075.0
|
568552.0
|
488355.0
|
Medi 2016
|
471767.0
|
883706.0
|
565376.0
|
486660.0
|
Hydref 2016
|
471008.0
|
883336.0
|
565977.0
|
482452.0
|
Tachwedd 2016
|
470854.0
|
886553.0
|
562093.0
|
480836.0
|
Rhagfyr 2016
|
472374.0
|
887005.0
|
562272.0
|
483479.0
|
Ionawr 2017
|
475619.0
|
893279.0
|
568911.0
|
487710.0
|
Chwefror 2017
|
476717.0
|
887959.0
|
563242.0
|
482631.0
|
Mawrth 2017
|
475442.0
|
893859.0
|
566834.0
|
485460.0
|
Ebrill 2017
|
479790.0
|
899133.0
|
567701.0
|
488136.0
|
Mai 2017
|
480902.0
|
890430.0
|
571569.0
|
487874.0
|
Mehefin 2017
|
480152.0
|
890539.0
|
569116.0
|
490877.0
|
Gorffennaf 2017
|
488527.0
|
903023.0
|
582307.0
|
499705.0
|
Awst 2017
|
487085.0
|
904655.0
|
579880.0
|
501173.0
|
Medi 2017
|
483833.0
|
913220.0
|
578519.0
|
496318.0
|
Hydref 2017
|
481762.0
|
908782.0
|
580410.0
|
494013.0
|
Tachwedd 2017
|
476290.0
|
892900.0
|
573421.0
|
488341.0
|
Rhagfyr 2017
|
476848.0
|
899100.0
|
573194.0
|
489692.0
|
Ionawr 2018
|
479772.0
|
895602.0
|
576870.0
|
490615.0
|
Chwefror 2018
|
477860.0
|
898057.0
|
574508.0
|
489511.0
|
Mawrth 2018
|
472357.0
|
890041.0
|
572169.0
|
487242.0
|
Ebrill 2018
|
477253.0
|
898928.0
|
579191.0
|
493274.0
|
Mai 2018
|
478485.0
|
903088.0
|
581868.0
|
497350.0
|
Mehefin 2018
|
479931.0
|
909153.0
|
587607.0
|
497145.0
|
Gorffennaf 2018
|
484724.0
|
929011.0
|
591665.0
|
504801.0
|
Awst 2018
|
479550.0
|
912509.0
|
583664.0
|
498383.0
|
Medi 2018
|
476545.0
|
912657.0
|
583686.0
|
496528.0
|
Hydref 2018
|
480057.0
|
919012.0
|
586432.0
|
498816.0
|
Tachwedd 2018
|
474347.0
|
913641.0
|
580831.0
|
494653.0
|
Rhagfyr 2018
|
473252.0
|
899415.0
|
579876.0
|
490483.0
|
Ionawr 2019
|
470067.0
|
909861.0
|
578054.0
|
488264.0
|
Chwefror 2019
|
466068.0
|
897130.0
|
571003.0
|
484811.0
|
Mawrth 2019
|
464162.0
|
879600.0
|
566491.0
|
483203.0
|
Ebrill 2019
|
469537.0
|
886952.0
|
570672.0
|
489897.0
|
Mai 2019
|
463628.0
|
877723.0
|
567219.0
|
486645.0
|
Mehefin 2019
|
470519.0
|
892527.0
|
579285.0
|
491488.0
|
Gorffennaf 2019
|
478505.0
|
900158.0
|
581341.0
|
499058.0
|
Awst 2019
|
472729.0
|
902797.0
|
580661.0
|
500513.0
|
Medi 2019
|
477146.0
|
901921.0
|
578597.0
|
498570.0
|
Hydref 2019
|
472668.0
|
901258.0
|
584448.0
|
495293.0
|
Tachwedd 2019
|
468757.0
|
904492.0
|
580116.0
|
495186.0
|
Rhagfyr 2019
|
479153.0
|
908784.0
|
584771.0
|
502617.0
|
Ionawr 2020
|
475948.0
|
892166.0
|
580151.0
|
498319.0
|
Chwefror 2020
|
474480.0
|
913264.0
|
584538.0
|
501384.0
|
Mawrth 2020
|
482605.0
|
917831.0
|
591621.0
|
505497.0
|
Ebrill 2020
|
476159.0
|
921807.0
|
585408.0
|
502673.0
|
Mai 2020
|
473225.0
|
907980.0
|
582060.0
|
497618.0
|
Mehefin 2020
|
479969.0
|
906997.0
|
593008.0
|
510449.0
|
Gorffennaf 2020
|
483830.0
|
920274.0
|
595144.0
|
511049.0
|
Awst 2020
|
489424.0
|
937891.0
|
606544.0
|
521320.0
|
Medi 2020
|
493205.0
|
941153.0
|
609487.0
|
525821.0
|
Hydref 2020
|
486212.0
|
939399.0
|
605395.0
|
522700.0
|
Tachwedd 2020
|
494552.0
|
959523.0
|
616305.0
|
531341.0
|
Rhagfyr 2020
|
494193.0
|
957470.0
|
618971.0
|
532917.0
|
Ionawr 2021
|
494231.0
|
939149.0
|
611753.0
|
526266.0
|
Chwefror 2021
|
490544.0
|
931191.0
|
607236.0
|
520691.0
|
Mawrth 2021
|
499098.0
|
935118.0
|
612032.0
|
528018.0
|
Ebrill 2021
|
488928.0
|
942851.0
|
608728.0
|
519405.0
|
Mai 2021
|
488226.0
|
943035.0
|
608575.0
|
518916.0
|
Mehefin 2021
|
502730.0
|
953749.0
|
622210.0
|
541094.0
|
Gorffennaf 2021
|
494873.0
|
962414.0
|
606413.0
|
515725.0
|
Dyddiad
|
Pob math o eiddo
|
Tai ar wahân
|
Tai pâr
|
Tai teras
|
Ionawr 1980
|
27.3
|
|
|
|
Chwefror 1980
|
27.3
|
|
|
|
Mawrth 1980
|
27.3
|
|
|
|
Ebrill 1980
|
25.6
|
|
|
|
Mai 1980
|
25.6
|
|
|
|
Mehefin 1980
|
25.6
|
|
|
|
Gorffennaf 1980
|
19.4
|
|
|
|
Awst 1980
|
19.4
|
|
|
|
Medi 1980
|
19.4
|
|
|
|
Hydref 1980
|
14.1
|
|
|
|
Tachwedd 1980
|
14.1
|
|
|
|
Rhagfyr 1980
|
14.1
|
|
|
|
Ionawr 1981
|
3.5
|
|
|
|
Chwefror 1981
|
3.5
|
|
|
|
Mawrth 1981
|
3.5
|
|
|
|
Ebrill 1981
|
4.9
|
|
|
|
Mai 1981
|
4.9
|
|
|
|
Mehefin 1981
|
4.9
|
|
|
|
Gorffennaf 1981
|
3.2
|
|
|
|
Awst 1981
|
3.2
|
|
|
|
Medi 1981
|
3.2
|
|
|
|
Hydref 1981
|
1.8
|
|
|
|
Tachwedd 1981
|
1.8
|
|
|
|
Rhagfyr 1981
|
1.8
|
|
|
|
Ionawr 1982
|
-1.2
|
|
|
|
Chwefror 1982
|
-1.2
|
|
|
|
Mawrth 1982
|
-1.2
|
|
|
|
Ebrill 1982
|
-0.4
|
|
|
|
Mai 1982
|
-0.4
|
|
|
|
Mehefin 1982
|
-0.4
|
|
|
|
Gorffennaf 1982
|
2.4
|
|
|
|
Awst 1982
|
2.4
|
|
|
|
Medi 1982
|
2.4
|
|
|
|
Hydref 1982
|
5.2
|
|
|
|
Tachwedd 1982
|
5.2
|
|
|
|
Rhagfyr 1982
|
5.2
|
|
|
|
Ionawr 1983
|
15.1
|
|
|
|
Chwefror 1983
|
15.1
|
|
|
|
Mawrth 1983
|
15.1
|
|
|
|
Ebrill 1983
|
9.9
|
|
|
|
Mai 1983
|
9.9
|
|
|
|
Mehefin 1983
|
9.9
|
|
|
|
Gorffennaf 1983
|
12.7
|
|
|
|
Awst 1983
|
12.7
|
|
|
|
Medi 1983
|
12.7
|
|
|
|
Hydref 1983
|
11.8
|
|
|
|
Tachwedd 1983
|
11.8
|
|
|
|
Rhagfyr 1983
|
11.8
|
|
|
|
Ionawr 1984
|
11.6
|
|
|
|
Chwefror 1984
|
11.6
|
|
|
|
Mawrth 1984
|
11.6
|
|
|
|
Ebrill 1984
|
19.1
|
|
|
|
Mai 1984
|
19.1
|
|
|
|
Mehefin 1984
|
19.1
|
|
|
|
Gorffennaf 1984
|
16.7
|
|
|
|
Awst 1984
|
16.7
|
|
|
|
Medi 1984
|
16.7
|
|
|
|
Hydref 1984
|
16.3
|
|
|
|
Tachwedd 1984
|
16.3
|
|
|
|
Rhagfyr 1984
|
16.3
|
|
|
|
Ionawr 1985
|
13.6
|
|
|
|
Chwefror 1985
|
13.6
|
|
|
|
Mawrth 1985
|
13.6
|
|
|
|
Ebrill 1985
|
12.4
|
|
|
|
Mai 1985
|
12.4
|
|
|
|
Mehefin 1985
|
12.4
|
|
|
|
Gorffennaf 1985
|
12.1
|
|
|
|
Awst 1985
|
12.1
|
|
|
|
Medi 1985
|
12.1
|
|
|
|
Hydref 1985
|
16.1
|
|
|
|
Tachwedd 1985
|
16.1
|
|
|
|
Rhagfyr 1985
|
16.1
|
|
|
|
Ionawr 1986
|
21.1
|
|
|
|
Chwefror 1986
|
21.1
|
|
|
|
Mawrth 1986
|
21.1
|
|
|
|
Ebrill 1986
|
20.8
|
|
|
|
Mai 1986
|
20.8
|
|
|
|
Mehefin 1986
|
20.8
|
|
|
|
Gorffennaf 1986
|
23.6
|
|
|
|
Awst 1986
|
23.6
|
|
|
|
Medi 1986
|
23.6
|
|
|
|
Hydref 1986
|
25.3
|
|
|
|
Tachwedd 1986
|
25.3
|
|
|
|
Rhagfyr 1986
|
25.3
|
|
|
|
Ionawr 1987
|
23.8
|
|
|
|
Chwefror 1987
|
23.8
|
|
|
|
Mawrth 1987
|
23.8
|
|
|
|
Ebrill 1987
|
21.0
|
|
|
|
Mai 1987
|
21.0
|
|
|
|
Mehefin 1987
|
21.0
|
|
|
|
Gorffennaf 1987
|
23.7
|
|
|
|
Awst 1987
|
23.7
|
|
|
|
Medi 1987
|
23.7
|
|
|
|
Hydref 1987
|
24.5
|
|
|
|
Tachwedd 1987
|
24.5
|
|
|
|
Rhagfyr 1987
|
24.5
|
|
|
|
Ionawr 1988
|
25.2
|
|
|
|
Chwefror 1988
|
25.2
|
|
|
|
Mawrth 1988
|
25.2
|
|
|
|
Ebrill 1988
|
24.8
|
|
|
|
Mai 1988
|
24.8
|
|
|
|
Mehefin 1988
|
24.8
|
|
|
|
Gorffennaf 1988
|
25.5
|
|
|
|
Awst 1988
|
25.5
|
|
|
|
Medi 1988
|
25.5
|
|
|
|
Hydref 1988
|
24.7
|
|
|
|
Tachwedd 1988
|
24.7
|
|
|
|
Rhagfyr 1988
|
24.7
|
|
|
|
Ionawr 1989
|
15.8
|
|
|
|
Chwefror 1989
|
15.8
|
|
|
|
Mawrth 1989
|
15.8
|
|
|
|
Ebrill 1989
|
15.6
|
|
|
|
Mai 1989
|
15.6
|
|
|
|
Mehefin 1989
|
15.6
|
|
|
|
Gorffennaf 1989
|
6.2
|
|
|
|
Awst 1989
|
6.2
|
|
|
|
Medi 1989
|
6.2
|
|
|
|
Hydref 1989
|
-3.9
|
|
|
|
Tachwedd 1989
|
-3.9
|
|
|
|
Rhagfyr 1989
|
-3.9
|
|
|
|
Ionawr 1990
|
2.5
|
|
|
|
Chwefror 1990
|
2.5
|
|
|
|
Mawrth 1990
|
2.5
|
|
|
|
Ebrill 1990
|
-5.6
|
|
|
|
Mai 1990
|
-5.6
|
|
|
|
Mehefin 1990
|
-5.6
|
|
|
|
Gorffennaf 1990
|
0.6
|
|
|
|
Awst 1990
|
0.6
|
|
|
|
Medi 1990
|
0.6
|
|
|
|
Hydref 1990
|
-3.3
|
|
|
|
Tachwedd 1990
|
-3.3
|
|
|
|
Rhagfyr 1990
|
-3.3
|
|
|
|
Ionawr 1991
|
-3.8
|
|
|
|
Chwefror 1991
|
-3.8
|
|
|
|
Mawrth 1991
|
-3.8
|
|
|
|
Ebrill 1991
|
-2.7
|
|
|
|
Mai 1991
|
-2.7
|
|
|
|
Mehefin 1991
|
-2.7
|
|
|
|
Gorffennaf 1991
|
-6.6
|
|
|
|
Awst 1991
|
-6.6
|
|
|
|
Medi 1991
|
-6.6
|
|
|
|
Hydref 1991
|
-3.2
|
|
|
|
Tachwedd 1991
|
-3.2
|
|
|
|
Rhagfyr 1991
|
-3.2
|
|
|
|
Ionawr 1992
|
-4.5
|
|
|
|
Chwefror 1992
|
-4.5
|
|
|
|
Mawrth 1992
|
-4.5
|
|
|
|
Ebrill 1992
|
-10.2
|
|
|
|
Mai 1992
|
-10.2
|
|
|
|
Mehefin 1992
|
-10.2
|
|
|
|
Gorffennaf 1992
|
-11.3
|
|
|
|
Awst 1992
|
-11.3
|
|
|
|
Medi 1992
|
-11.3
|
|
|
|
Hydref 1992
|
-11.7
|
|
|
|
Tachwedd 1992
|
-11.7
|
|
|
|
Rhagfyr 1992
|
-11.7
|
|
|
|
Ionawr 1993
|
-7.9
|
|
|
|
Chwefror 1993
|
-7.9
|
|
|
|
Mawrth 1993
|
-7.9
|
|
|
|
Ebrill 1993
|
2.1
|
|
|
|
Mai 1993
|
2.1
|
|
|
|
Mehefin 1993
|
2.1
|
|
|
|
Gorffennaf 1993
|
1.4
|
|
|
|
Awst 1993
|
1.4
|
|
|
|
Medi 1993
|
1.4
|
|
|
|
Hydref 1993
|
3.6
|
|
|
|
Tachwedd 1993
|
3.6
|
|
|
|
Rhagfyr 1993
|
3.6
|
|
|
|
Ionawr 1994
|
0.1
|
|
|
|
Chwefror 1994
|
0.1
|
|
|
|
Mawrth 1994
|
0.1
|
|
|
|
Ebrill 1994
|
5.9
|
|
|
|
Mai 1994
|
5.9
|
|
|
|
Mehefin 1994
|
5.9
|
|
|
|
Gorffennaf 1994
|
7.4
|
|
|
|
Awst 1994
|
7.4
|
|
|
|
Medi 1994
|
7.4
|
|
|
|
Hydref 1994
|
5.7
|
|
|
|
Tachwedd 1994
|
5.7
|
|
|
|
Rhagfyr 1994
|
5.7
|
|
|
|
Ionawr 1995
|
10.0
|
|
|
|
Chwefror 1995
|
7.6
|
|
|
|
Mawrth 1995
|
9.2
|
|
|
|
Ebrill 1995
|
2.0
|
|
|
|
Mai 1995
|
3.3
|
|
|
|
Mehefin 1995
|
3.6
|
|
|
|
Gorffennaf 1995
|
3.7
|
|
|
|
Awst 1995
|
3.1
|
|
|
|
Medi 1995
|
2.3
|
|
|
|
Hydref 1995
|
4.8
|
|
|
|
Tachwedd 1995
|
4.5
|
|
|
|
Rhagfyr 1995
|
6.0
|
|
|
|
Ionawr 1996
|
1.2
|
-0.9
|
0.5
|
1.4
|
Chwefror 1996
|
4.6
|
1.4
|
1.5
|
1.8
|
Mawrth 1996
|
2.4
|
3.2
|
2.2
|
2.0
|
Ebrill 1996
|
3.1
|
2.2
|
2.3
|
2.4
|
Mai 1996
|
2.4
|
1.1
|
1.7
|
2.6
|
Mehefin 1996
|
3.4
|
3.2
|
2.6
|
3.0
|
Gorffennaf 1996
|
3.7
|
3.2
|
2.8
|
2.7
|
Awst 1996
|
4.7
|
4.8
|
4.2
|
4.6
|
Medi 1996
|
6.4
|
6.3
|
6.0
|
5.7
|
Hydref 1996
|
7.0
|
6.7
|
6.1
|
7.2
|
Tachwedd 1996
|
8.2
|
7.3
|
7.4
|
8.9
|
Rhagfyr 1996
|
8.3
|
7.7
|
8.3
|
8.6
|
Ionawr 1997
|
10.2
|
10.1
|
9.7
|
10.0
|
Chwefror 1997
|
9.8
|
10.5
|
8.2
|
9.4
|
Mawrth 1997
|
11.7
|
10.3
|
10.1
|
11.4
|
Ebrill 1997
|
12.1
|
12.5
|
11.9
|
12.1
|
Mai 1997
|
14.7
|
16.1
|
14.2
|
13.5
|
Mehefin 1997
|
14.2
|
16.3
|
14.3
|
15.2
|
Gorffennaf 1997
|
16.9
|
17.5
|
16.9
|
17.8
|
Awst 1997
|
16.5
|
17.4
|
16.8
|
16.1
|
Medi 1997
|
18.1
|
19.5
|
18.3
|
17.8
|
Hydref 1997
|
18.1
|
18.6
|
18.5
|
18.1
|
Tachwedd 1997
|
18.5
|
22.3
|
19.3
|
17.5
|
Rhagfyr 1997
|
19.0
|
20.8
|
19.2
|
18.8
|
Ionawr 1998
|
17.9
|
20.8
|
18.2
|
18.1
|
Chwefror 1998
|
16.0
|
16.6
|
17.3
|
15.8
|
Mawrth 1998
|
17.0
|
17.8
|
17.6
|
16.6
|
Ebrill 1998
|
17.7
|
19.1
|
18.4
|
17.6
|
Mai 1998
|
14.2
|
14.2
|
14.9
|
14.6
|
Mehefin 1998
|
15.3
|
13.9
|
15.4
|
14.4
|
Gorffennaf 1998
|
13.3
|
14.0
|
14.0
|
12.5
|
Awst 1998
|
13.0
|
14.4
|
13.0
|
12.8
|
Medi 1998
|
11.1
|
11.5
|
11.4
|
11.1
|
Hydref 1998
|
10.9
|
11.1
|
11.0
|
9.9
|
Tachwedd 1998
|
9.7
|
9.5
|
10.0
|
8.9
|
Rhagfyr 1998
|
8.2
|
7.4
|
7.7
|
7.6
|
Ionawr 1999
|
8.0
|
6.6
|
7.8
|
6.4
|
Chwefror 1999
|
8.6
|
9.6
|
8.5
|
8.0
|
Mawrth 1999
|
8.6
|
8.8
|
8.2
|
7.8
|
Ebrill 1999
|
8.2
|
8.3
|
7.6
|
8.3
|
Mai 1999
|
10.0
|
9.1
|
8.3
|
9.0
|
Mehefin 1999
|
10.1
|
11.1
|
9.7
|
10.2
|
Gorffennaf 1999
|
12.1
|
11.4
|
10.0
|
12.0
|
Awst 1999
|
14.7
|
11.3
|
12.0
|
14.4
|
Medi 1999
|
17.2
|
15.0
|
13.6
|
15.8
|
Hydref 1999
|
18.1
|
16.1
|
15.7
|
17.6
|
Tachwedd 1999
|
20.6
|
18.2
|
17.9
|
21.0
|
Rhagfyr 1999
|
22.1
|
19.5
|
18.7
|
21.1
|
Ionawr 2000
|
23.4
|
24.0
|
22.8
|
23.7
|
Chwefror 2000
|
26.1
|
24.1
|
23.2
|
26.1
|
Mawrth 2000
|
25.0
|
25.0
|
23.8
|
25.6
|
Ebrill 2000
|
28.3
|
26.4
|
25.6
|
26.4
|
Mai 2000
|
26.7
|
28.2
|
26.5
|
25.8
|
Mehefin 2000
|
26.7
|
24.3
|
24.9
|
25.0
|
Gorffennaf 2000
|
25.0
|
25.5
|
24.5
|
23.6
|
Awst 2000
|
23.4
|
23.6
|
23.2
|
20.9
|
Medi 2000
|
20.2
|
20.9
|
20.2
|
19.2
|
Hydref 2000
|
18.4
|
20.3
|
19.2
|
17.6
|
Tachwedd 2000
|
17.4
|
17.6
|
15.6
|
14.9
|
Rhagfyr 2000
|
15.3
|
15.9
|
14.7
|
13.8
|
Ionawr 2001
|
14.7
|
11.6
|
12.0
|
13.3
|
Chwefror 2001
|
12.9
|
13.2
|
13.2
|
12.1
|
Mawrth 2001
|
12.4
|
9.8
|
10.8
|
10.8
|
Ebrill 2001
|
8.7
|
8.0
|
7.9
|
8.6
|
Mai 2001
|
11.6
|
7.5
|
8.7
|
10.9
|
Mehefin 2001
|
10.6
|
7.8
|
8.2
|
9.5
|
Gorffennaf 2001
|
10.2
|
7.7
|
8.8
|
9.3
|
Awst 2001
|
11.8
|
9.3
|
9.5
|
12.0
|
Medi 2001
|
11.9
|
9.3
|
10.6
|
11.8
|
Hydref 2001
|
14.1
|
10.6
|
11.5
|
14.2
|
Tachwedd 2001
|
13.2
|
10.3
|
13.2
|
13.8
|
Rhagfyr 2001
|
13.7
|
10.8
|
12.5
|
13.0
|
Ionawr 2002
|
13.6
|
12.4
|
13.7
|
12.9
|
Chwefror 2002
|
13.8
|
9.7
|
11.8
|
13.3
|
Mawrth 2002
|
14.4
|
12.5
|
13.6
|
14.0
|
Ebrill 2002
|
16.6
|
13.3
|
15.5
|
14.9
|
Mai 2002
|
16.3
|
14.8
|
16.5
|
15.3
|
Mehefin 2002
|
17.2
|
14.8
|
15.9
|
16.6
|
Gorffennaf 2002
|
18.6
|
15.7
|
17.2
|
18.4
|
Awst 2002
|
18.6
|
15.8
|
18.5
|
18.7
|
Medi 2002
|
19.6
|
16.0
|
19.6
|
19.4
|
Hydref 2002
|
19.8
|
16.2
|
19.9
|
19.6
|
Tachwedd 2002
|
21.1
|
19.0
|
20.4
|
21.1
|
Rhagfyr 2002
|
21.3
|
19.8
|
22.9
|
22.5
|
Ionawr 2003
|
22.0
|
18.9
|
20.8
|
23.6
|
Chwefror 2003
|
21.1
|
19.4
|
22.6
|
21.5
|
Mawrth 2003
|
19.0
|
18.0
|
20.3
|
19.9
|
Ebrill 2003
|
16.7
|
15.6
|
18.9
|
17.9
|
Mai 2003
|
15.2
|
14.0
|
16.9
|
17.0
|
Mehefin 2003
|
12.3
|
13.0
|
15.4
|
13.8
|
Gorffennaf 2003
|
11.8
|
9.4
|
13.7
|
13.0
|
Awst 2003
|
8.9
|
7.4
|
10.6
|
10.0
|
Medi 2003
|
8.0
|
7.4
|
9.7
|
9.5
|
Hydref 2003
|
7.8
|
5.7
|
8.2
|
9.2
|
Tachwedd 2003
|
6.4
|
3.1
|
7.4
|
8.4
|
Rhagfyr 2003
|
6.6
|
3.2
|
6.2
|
7.8
|
Ionawr 2004
|
5.6
|
3.6
|
6.6
|
6.2
|
Chwefror 2004
|
6.5
|
4.8
|
6.4
|
8.2
|
Mawrth 2004
|
7.7
|
4.1
|
6.4
|
8.9
|
Ebrill 2004
|
8.6
|
4.7
|
8.0
|
11.1
|
Mai 2004
|
8.0
|
2.7
|
6.8
|
9.0
|
Mehefin 2004
|
10.2
|
4.9
|
8.7
|
11.4
|
Gorffennaf 2004
|
9.4
|
5.0
|
8.4
|
11.0
|
Awst 2004
|
10.4
|
6.9
|
9.2
|
11.7
|
Medi 2004
|
10.0
|
5.3
|
8.3
|
11.2
|
Hydref 2004
|
8.2
|
4.9
|
7.2
|
9.4
|
Tachwedd 2004
|
8.9
|
5.7
|
7.7
|
9.5
|
Rhagfyr 2004
|
6.1
|
4.9
|
5.4
|
7.5
|
Ionawr 2005
|
6.2
|
3.2
|
4.8
|
7.5
|
Chwefror 2005
|
5.2
|
1.8
|
3.8
|
5.9
|
Mawrth 2005
|
4.5
|
1.8
|
4.0
|
5.6
|
Ebrill 2005
|
4.2
|
1.7
|
3.0
|
4.9
|
Mai 2005
|
3.7
|
4.1
|
3.2
|
4.4
|
Mehefin 2005
|
2.5
|
1.1
|
2.0
|
4.4
|
Gorffennaf 2005
|
1.7
|
0.4
|
0.9
|
2.4
|
Awst 2005
|
1.3
|
-0.7
|
-0.0
|
2.1
|
Medi 2005
|
1.2
|
0.0
|
0.7
|
2.4
|
Hydref 2005
|
0.9
|
-1.2
|
-0.1
|
1.8
|
Tachwedd 2005
|
0.8
|
-0.8
|
0.1
|
2.1
|
Rhagfyr 2005
|
3.6
|
-0.5
|
1.0
|
4.2
|
Ionawr 2006
|
3.2
|
1.3
|
2.5
|
4.1
|
Chwefror 2006
|
3.4
|
1.3
|
2.2
|
4.0
|
Mawrth 2006
|
4.4
|
3.2
|
3.5
|
5.0
|
Ebrill 2006
|
4.3
|
2.8
|
3.2
|
4.9
|
Mai 2006
|
5.0
|
2.8
|
3.3
|
5.6
|
Mehefin 2006
|
6.6
|
5.2
|
4.8
|
6.7
|
Gorffennaf 2006
|
6.7
|
5.3
|
5.2
|
7.8
|
Awst 2006
|
7.9
|
6.4
|
7.0
|
8.7
|
Medi 2006
|
8.7
|
7.0
|
6.8
|
8.6
|
Hydref 2006
|
10.6
|
9.1
|
8.7
|
10.7
|
Tachwedd 2006
|
9.4
|
8.9
|
8.5
|
10.0
|
Rhagfyr 2006
|
11.0
|
11.9
|
10.9
|
11.6
|
Ionawr 2007
|
11.6
|
9.4
|
9.6
|
11.8
|
Chwefror 2007
|
13.2
|
11.8
|
11.3
|
12.9
|
Mawrth 2007
|
13.3
|
11.6
|
11.4
|
13.6
|
Ebrill 2007
|
13.6
|
12.6
|
11.7
|
14.2
|
Mai 2007
|
14.2
|
11.9
|
12.2
|
14.4
|
Mehefin 2007
|
13.7
|
12.7
|
12.0
|
13.6
|
Gorffennaf 2007
|
16.5
|
15.8
|
14.6
|
15.7
|
Awst 2007
|
16.0
|
14.2
|
13.4
|
15.9
|
Medi 2007
|
15.9
|
14.4
|
13.4
|
15.4
|
Hydref 2007
|
15.2
|
15.0
|
13.0
|
14.8
|
Tachwedd 2007
|
15.0
|
15.6
|
13.5
|
14.2
|
Rhagfyr 2007
|
12.7
|
12.3
|
11.3
|
11.9
|
Ionawr 2008
|
11.6
|
13.3
|
10.8
|
11.1
|
Chwefror 2008
|
9.2
|
10.2
|
8.8
|
9.5
|
Mawrth 2008
|
7.4
|
8.2
|
7.4
|
7.5
|
Ebrill 2008
|
5.6
|
8.8
|
5.6
|
5.0
|
Mai 2008
|
4.4
|
6.7
|
5.0
|
4.5
|
Mehefin 2008
|
1.4
|
3.4
|
2.2
|
2.1
|
Gorffennaf 2008
|
-1.8
|
-0.3
|
-2.1
|
-2.4
|
Awst 2008
|
-5.4
|
-2.6
|
-4.1
|
-5.9
|
Medi 2008
|
-7.4
|
-5.2
|
-7.1
|
-7.7
|
Hydref 2008
|
-10.6
|
-8.8
|
-10.1
|
-11.6
|
Tachwedd 2008
|
-13.1
|
-12.0
|
-13.0
|
-13.2
|
Rhagfyr 2008
|
-14.8
|
-12.9
|
-13.8
|
-14.3
|
Ionawr 2009
|
-15.2
|
-13.8
|
-15.0
|
-16.2
|
Chwefror 2009
|
-15.5
|
-15.9
|
-15.6
|
-16.0
|
Mawrth 2009
|
-15.8
|
-15.9
|
-16.5
|
-17.2
|
Ebrill 2009
|
-16.6
|
-18.1
|
-16.5
|
-17.2
|
Mai 2009
|
-15.3
|
-16.0
|
-15.6
|
-16.0
|
Mehefin 2009
|
-12.6
|
-13.6
|
-13.1
|
-12.9
|
Gorffennaf 2009
|
-10.5
|
-11.3
|
-9.7
|
-9.5
|
Awst 2009
|
-7.0
|
-7.6
|
-6.4
|
-6.2
|
Medi 2009
|
-3.2
|
-5.2
|
-3.1
|
-2.5
|
Hydref 2009
|
0.7
|
-0.4
|
1.7
|
2.9
|
Tachwedd 2009
|
3.2
|
1.6
|
3.0
|
4.8
|
Rhagfyr 2009
|
6.4
|
4.6
|
6.7
|
7.6
|
Ionawr 2010
|
10.5
|
8.3
|
11.4
|
13.4
|
Chwefror 2010
|
11.6
|
12.7
|
13.2
|
14.4
|
Mawrth 2010
|
13.4
|
15.6
|
15.1
|
15.5
|
Ebrill 2010
|
14.9
|
16.2
|
15.7
|
16.6
|
Mai 2010
|
12.7
|
15.1
|
14.2
|
15.1
|
Mehefin 2010
|
12.2
|
14.4
|
13.5
|
13.4
|
Gorffennaf 2010
|
12.7
|
15.6
|
13.3
|
14.2
|
Awst 2010
|
10.9
|
12.4
|
12.1
|
11.8
|
Medi 2010
|
8.4
|
12.5
|
10.5
|
10.2
|
Hydref 2010
|
6.5
|
8.6
|
7.4
|
7.2
|
Tachwedd 2010
|
5.8
|
8.9
|
8.0
|
5.4
|
Rhagfyr 2010
|
5.6
|
8.5
|
6.4
|
5.3
|
Ionawr 2011
|
3.0
|
6.8
|
3.6
|
2.8
|
Chwefror 2011
|
2.3
|
6.1
|
2.5
|
1.3
|
Mawrth 2011
|
2.4
|
5.1
|
1.9
|
2.0
|
Ebrill 2011
|
4.3
|
5.0
|
2.6
|
3.7
|
Mai 2011
|
1.0
|
1.4
|
1.3
|
0.5
|
Mehefin 2011
|
0.5
|
-0.3
|
0.2
|
-0.1
|
Gorffennaf 2011
|
1.0
|
-0.9
|
-0.3
|
-0.1
|
Awst 2011
|
1.5
|
1.1
|
0.5
|
1.7
|
Medi 2011
|
1.8
|
1.3
|
0.9
|
1.6
|
Hydref 2011
|
2.1
|
3.1
|
2.4
|
1.7
|
Tachwedd 2011
|
3.1
|
2.4
|
1.6
|
2.5
|
Rhagfyr 2011
|
2.4
|
1.5
|
1.8
|
2.3
|
Ionawr 2012
|
2.2
|
-1.2
|
1.7
|
2.2
|
Chwefror 2012
|
2.5
|
2.4
|
3.2
|
3.8
|
Mawrth 2012
|
1.1
|
-2.8
|
1.0
|
2.5
|
Ebrill 2012
|
1.7
|
0.9
|
2.3
|
2.3
|
Mai 2012
|
6.8
|
5.7
|
5.7
|
7.5
|
Mehefin 2012
|
7.3
|
6.2
|
6.1
|
8.6
|
Gorffennaf 2012
|
4.4
|
4.5
|
4.6
|
5.7
|
Awst 2012
|
5.1
|
4.2
|
4.2
|
5.6
|
Medi 2012
|
4.4
|
2.3
|
3.5
|
4.9
|
Hydref 2012
|
6.2
|
2.7
|
3.9
|
6.8
|
Tachwedd 2012
|
6.0
|
3.7
|
5.0
|
7.6
|
Rhagfyr 2012
|
7.3
|
5.6
|
5.1
|
8.6
|
Ionawr 2013
|
5.8
|
5.5
|
5.2
|
6.3
|
Chwefror 2013
|
7.2
|
2.7
|
4.1
|
7.0
|
Mawrth 2013
|
7.6
|
7.9
|
7.0
|
7.7
|
Ebrill 2013
|
7.3
|
5.5
|
5.6
|
7.8
|
Mai 2013
|
6.0
|
5.3
|
5.0
|
6.1
|
Mehefin 2013
|
5.8
|
5.7
|
5.2
|
5.6
|
Gorffennaf 2013
|
7.8
|
5.5
|
5.9
|
7.7
|
Awst 2013
|
8.3
|
6.7
|
7.0
|
8.2
|
Medi 2013
|
10.4
|
8.3
|
7.8
|
10.1
|
Hydref 2013
|
9.6
|
8.4
|
8.3
|
9.2
|
Tachwedd 2013
|
11.4
|
8.9
|
9.6
|
10.9
|
Rhagfyr 2013
|
12.2
|
8.2
|
10.0
|
11.3
|
Ionawr 2014
|
14.3
|
11.4
|
11.4
|
13.8
|
Chwefror 2014
|
14.1
|
12.4
|
12.5
|
13.5
|
Mawrth 2014
|
15.7
|
11.8
|
12.9
|
15.1
|
Ebrill 2014
|
17.0
|
16.1
|
16.4
|
17.4
|
Mai 2014
|
18.7
|
15.3
|
16.1
|
18.7
|
Mehefin 2014
|
19.3
|
16.4
|
17.3
|
19.2
|
Gorffennaf 2014
|
19.8
|
19.0
|
19.8
|
20.2
|
Awst 2014
|
20.6
|
19.0
|
19.4
|
20.9
|
Medi 2014
|
18.6
|
17.7
|
18.9
|
19.0
|
Hydref 2014
|
18.3
|
17.8
|
18.2
|
19.3
|
Tachwedd 2014
|
16.6
|
17.7
|
17.6
|
17.5
|
Rhagfyr 2014
|
14.4
|
16.9
|
15.7
|
15.1
|
Ionawr 2015
|
13.2
|
14.0
|
14.0
|
13.5
|
Chwefror 2015
|
13.1
|
13.8
|
14.0
|
13.8
|
Mawrth 2015
|
12.0
|
13.8
|
13.5
|
12.4
|
Ebrill 2015
|
9.4
|
10.4
|
10.3
|
9.8
|
Mai 2015
|
8.6
|
9.5
|
10.0
|
8.7
|
Mehefin 2015
|
8.3
|
10.4
|
10.5
|
9.6
|
Gorffennaf 2015
|
8.2
|
8.1
|
8.8
|
8.8
|
Awst 2015
|
7.8
|
9.0
|
9.2
|
8.3
|
Medi 2015
|
8.9
|
11.1
|
10.3
|
9.4
|
Hydref 2015
|
9.5
|
11.3
|
11.6
|
11.0
|
Tachwedd 2015
|
11.2
|
11.5
|
11.9
|
12.0
|
Rhagfyr 2015
|
11.7
|
14.2
|
14.3
|
13.0
|
Ionawr 2016
|
13.6
|
13.9
|
15.9
|
15.0
|
Chwefror 2016
|
13.1
|
15.4
|
16.2
|
15.0
|
Mawrth 2016
|
14.8
|
17.0
|
16.0
|
16.2
|
Ebrill 2016
|
12.3
|
13.2
|
14.8
|
13.9
|
Mai 2016
|
12.4
|
14.1
|
14.9
|
14.1
|
Mehefin 2016
|
11.6
|
14.6
|
13.6
|
12.0
|
Gorffennaf 2016
|
10.2
|
13.4
|
13.1
|
11.2
|
Awst 2016
|
8.2
|
10.3
|
10.4
|
8.8
|
Medi 2016
|
7.3
|
7.7
|
9.4
|
8.0
|
Hydref 2016
|
6.9
|
7.1
|
7.8
|
5.9
|
Tachwedd 2016
|
5.7
|
7.0
|
6.4
|
4.9
|
Rhagfyr 2016
|
5.0
|
5.0
|
4.8
|
4.4
|
Ionawr 2017
|
4.0
|
5.5
|
4.0
|
3.7
|
Chwefror 2017
|
4.1
|
2.8
|
2.3
|
2.1
|
Mawrth 2017
|
2.3
|
2.3
|
3.1
|
1.7
|
Ebrill 2017
|
4.1
|
4.6
|
2.9
|
2.3
|
Mai 2017
|
2.9
|
3.0
|
2.4
|
1.3
|
Mehefin 2017
|
2.6
|
0.6
|
1.6
|
1.5
|
Gorffennaf 2017
|
2.7
|
1.1
|
1.7
|
1.3
|
Awst 2017
|
3.2
|
1.8
|
2.0
|
2.6
|
Medi 2017
|
2.6
|
3.3
|
2.3
|
2.0
|
Hydref 2017
|
2.3
|
2.9
|
2.6
|
2.4
|
Tachwedd 2017
|
1.2
|
0.7
|
2.0
|
1.6
|
Rhagfyr 2017
|
1.0
|
1.4
|
1.9
|
1.3
|
Ionawr 2018
|
0.9
|
0.3
|
1.4
|
0.6
|
Chwefror 2018
|
0.2
|
1.1
|
2.0
|
1.4
|
Mawrth 2018
|
-0.6
|
-0.4
|
0.9
|
0.4
|
Ebrill 2018
|
-0.5
|
-0.0
|
2.0
|
1.0
|
Mai 2018
|
-0.5
|
1.4
|
1.8
|
1.9
|
Mehefin 2018
|
-0.1
|
2.1
|
3.2
|
1.3
|
Gorffennaf 2018
|
-0.8
|
2.9
|
1.6
|
1.0
|
Awst 2018
|
-1.6
|
0.9
|
0.6
|
-0.6
|
Medi 2018
|
-1.5
|
-0.1
|
0.9
|
0.0
|
Hydref 2018
|
-0.4
|
1.1
|
1.0
|
1.0
|
Tachwedd 2018
|
-0.4
|
2.3
|
1.3
|
1.3
|
Rhagfyr 2018
|
-0.8
|
0.0
|
1.2
|
0.2
|
Ionawr 2019
|
-2.0
|
1.6
|
0.2
|
-0.5
|
Chwefror 2019
|
-2.5
|
-0.1
|
-0.6
|
-1.0
|
Mawrth 2019
|
-1.7
|
-1.2
|
-1.0
|
-0.8
|
Ebrill 2019
|
-1.6
|
-1.3
|
-1.5
|
-0.7
|
Mai 2019
|
-3.1
|
-2.8
|
-2.5
|
-2.2
|
Mehefin 2019
|
-2.0
|
-1.8
|
-1.4
|
-1.1
|
Gorffennaf 2019
|
-1.3
|
-3.1
|
-1.7
|
-1.1
|
Awst 2019
|
-1.4
|
-1.1
|
-0.5
|
0.4
|
Medi 2019
|
0.1
|
-1.2
|
-0.9
|
0.4
|
Hydref 2019
|
-1.5
|
-1.9
|
-0.3
|
-0.7
|
Tachwedd 2019
|
-1.2
|
-1.0
|
-0.1
|
0.1
|
Rhagfyr 2019
|
1.2
|
1.0
|
0.8
|
2.5
|
Ionawr 2020
|
1.2
|
-1.9
|
0.4
|
2.1
|
Chwefror 2020
|
1.8
|
1.8
|
2.4
|
3.4
|
Mawrth 2020
|
4.0
|
4.4
|
4.4
|
4.6
|
Ebrill 2020
|
1.4
|
3.9
|
2.6
|
2.6
|
Mai 2020
|
2.1
|
3.4
|
2.6
|
2.2
|
Mehefin 2020
|
2.0
|
1.6
|
2.4
|
3.9
|
Gorffennaf 2020
|
1.1
|
2.2
|
2.4
|
2.4
|
Awst 2020
|
3.5
|
3.9
|
4.5
|
4.2
|
Medi 2020
|
3.4
|
4.4
|
5.3
|
5.5
|
Hydref 2020
|
2.9
|
4.2
|
3.6
|
5.5
|
Tachwedd 2020
|
5.5
|
6.1
|
6.2
|
7.3
|
Rhagfyr 2020
|
3.1
|
5.4
|
5.8
|
6.0
|
Ionawr 2021
|
3.8
|
5.3
|
5.4
|
5.6
|
Chwefror 2021
|
3.4
|
2.0
|
3.9
|
3.9
|
Mawrth 2021
|
3.4
|
1.9
|
3.4
|
4.5
|
Ebrill 2021
|
2.7
|
2.3
|
4.0
|
3.3
|
Mai 2021
|
3.2
|
3.9
|
4.6
|
4.3
|
Mehefin 2021
|
4.7
|
5.2
|
4.9
|
6.0
|
Gorffennaf 2021
|
2.3
|
4.6
|
1.9
|
0.9
|
Dyddiad
|
Pob math o eiddo
|
Tai ar wahân
|
Tai pâr
|
Tai teras
|
Ionawr 1980
|
5.8
|
|
|
|
Chwefror 1980
|
5.8
|
|
|
|
Mawrth 1980
|
5.8
|
|
|
|
Ebrill 1980
|
5.2
|
|
|
|
Mai 1980
|
5.2
|
|
|
|
Mehefin 1980
|
5.2
|
|
|
|
Gorffennaf 1980
|
0.7
|
|
|
|
Awst 1980
|
0.7
|
|
|
|
Medi 1980
|
0.7
|
|
|
|
Hydref 1980
|
1.9
|
|
|
|
Tachwedd 1980
|
1.9
|
|
|
|
Rhagfyr 1980
|
1.9
|
|
|
|
Ionawr 1981
|
-4.1
|
|
|
|
Chwefror 1981
|
-4.1
|
|
|
|
Mawrth 1981
|
-4.1
|
|
|
|
Ebrill 1981
|
6.6
|
|
|
|
Mai 1981
|
6.6
|
|
|
|
Mehefin 1981
|
6.6
|
|
|
|
Gorffennaf 1981
|
-1.0
|
|
|
|
Awst 1981
|
-1.0
|
|
|
|
Medi 1981
|
-1.0
|
|
|
|
Hydref 1981
|
0.6
|
|
|
|
Tachwedd 1981
|
0.6
|
|
|
|
Rhagfyr 1981
|
0.6
|
|
|
|
Ionawr 1982
|
-7.0
|
|
|
|
Chwefror 1982
|
-7.0
|
|
|
|
Mawrth 1982
|
-7.0
|
|
|
|
Ebrill 1982
|
7.5
|
|
|
|
Mai 1982
|
7.5
|
|
|
|
Mehefin 1982
|
7.5
|
|
|
|
Gorffennaf 1982
|
1.8
|
|
|
|
Awst 1982
|
1.8
|
|
|
|
Medi 1982
|
1.8
|
|
|
|
Hydref 1982
|
3.3
|
|
|
|
Tachwedd 1982
|
3.3
|
|
|
|
Rhagfyr 1982
|
3.3
|
|
|
|
Ionawr 1983
|
1.8
|
|
|
|
Chwefror 1983
|
1.8
|
|
|
|
Mawrth 1983
|
1.8
|
|
|
|
Ebrill 1983
|
2.7
|
|
|
|
Mai 1983
|
2.7
|
|
|
|
Mehefin 1983
|
2.7
|
|
|
|
Gorffennaf 1983
|
4.4
|
|
|
|
Awst 1983
|
4.4
|
|
|
|
Medi 1983
|
4.4
|
|
|
|
Hydref 1983
|
2.5
|
|
|
|
Tachwedd 1983
|
2.5
|
|
|
|
Rhagfyr 1983
|
2.5
|
|
|
|
Ionawr 1984
|
1.6
|
|
|
|
Chwefror 1984
|
1.6
|
|
|
|
Mawrth 1984
|
1.6
|
|
|
|
Ebrill 1984
|
9.6
|
|
|
|
Mai 1984
|
9.6
|
|
|
|
Mehefin 1984
|
9.6
|
|
|
|
Gorffennaf 1984
|
2.2
|
|
|
|
Awst 1984
|
2.2
|
|
|
|
Medi 1984
|
2.2
|
|
|
|
Hydref 1984
|
2.1
|
|
|
|
Tachwedd 1984
|
2.1
|
|
|
|
Rhagfyr 1984
|
2.1
|
|
|
|
Ionawr 1985
|
-0.7
|
|
|
|
Chwefror 1985
|
-0.7
|
|
|
|
Mawrth 1985
|
-0.7
|
|
|
|
Ebrill 1985
|
8.4
|
|
|
|
Mai 1985
|
8.4
|
|
|
|
Mehefin 1985
|
8.4
|
|
|
|
Gorffennaf 1985
|
2.0
|
|
|
|
Awst 1985
|
2.0
|
|
|
|
Medi 1985
|
2.0
|
|
|
|
Hydref 1985
|
5.7
|
|
|
|
Tachwedd 1985
|
5.7
|
|
|
|
Rhagfyr 1985
|
5.7
|
|
|
|
Ionawr 1986
|
3.6
|
|
|
|
Chwefror 1986
|
3.6
|
|
|
|
Mawrth 1986
|
3.6
|
|
|
|
Ebrill 1986
|
8.1
|
|
|
|
Mai 1986
|
8.1
|
|
|
|
Mehefin 1986
|
8.1
|
|
|
|
Gorffennaf 1986
|
4.3
|
|
|
|
Awst 1986
|
4.3
|
|
|
|
Medi 1986
|
4.3
|
|
|
|
Hydref 1986
|
7.2
|
|
|
|
Tachwedd 1986
|
7.2
|
|
|
|
Rhagfyr 1986
|
7.2
|
|
|
|
Ionawr 1987
|
2.4
|
|
|
|
Chwefror 1987
|
2.4
|
|
|
|
Mawrth 1987
|
2.4
|
|
|
|
Ebrill 1987
|
5.6
|
|
|
|
Mai 1987
|
5.6
|
|
|
|
Mehefin 1987
|
5.6
|
|
|
|
Gorffennaf 1987
|
6.7
|
|
|
|
Awst 1987
|
6.7
|
|
|
|
Medi 1987
|
6.7
|
|
|
|
Hydref 1987
|
7.9
|
|
|
|
Tachwedd 1987
|
7.9
|
|
|
|
Rhagfyr 1987
|
7.9
|
|
|
|
Ionawr 1988
|
3.0
|
|
|
|
Chwefror 1988
|
3.0
|
|
|
|
Mawrth 1988
|
3.0
|
|
|
|
Ebrill 1988
|
5.3
|
|
|
|
Mai 1988
|
5.3
|
|
|
|
Mehefin 1988
|
5.3
|
|
|
|
Gorffennaf 1988
|
7.2
|
|
|
|
Awst 1988
|
7.2
|
|
|
|
Medi 1988
|
7.2
|
|
|
|
Hydref 1988
|
7.2
|
|
|
|
Tachwedd 1988
|
7.2
|
|
|
|
Rhagfyr 1988
|
7.2
|
|
|
|
Ionawr 1989
|
-4.4
|
|
|
|
Chwefror 1989
|
-4.4
|
|
|
|
Mawrth 1989
|
-4.4
|
|
|
|
Ebrill 1989
|
5.0
|
|
|
|
Mai 1989
|
5.0
|
|
|
|
Mehefin 1989
|
5.0
|
|
|
|
Gorffennaf 1989
|
-1.4
|
|
|
|
Awst 1989
|
-1.4
|
|
|
|
Medi 1989
|
-1.4
|
|
|
|
Hydref 1989
|
-2.9
|
|
|
|
Tachwedd 1989
|
-2.9
|
|
|
|
Rhagfyr 1989
|
-2.9
|
|
|
|
Ionawr 1990
|
1.9
|
|
|
|
Chwefror 1990
|
1.9
|
|
|
|
Mawrth 1990
|
1.9
|
|
|
|
Ebrill 1990
|
-3.2
|
|
|
|
Mai 1990
|
-3.2
|
|
|
|
Mehefin 1990
|
-3.2
|
|
|
|
Gorffennaf 1990
|
5.1
|
|
|
|
Awst 1990
|
5.1
|
|
|
|
Medi 1990
|
5.1
|
|
|
|
Hydref 1990
|
-6.7
|
|
|
|
Tachwedd 1990
|
-6.7
|
|
|
|
Rhagfyr 1990
|
-6.7
|
|
|
|
Ionawr 1991
|
1.4
|
|
|
|
Chwefror 1991
|
1.4
|
|
|
|
Mawrth 1991
|
1.4
|
|
|
|
Ebrill 1991
|
-2.2
|
|
|
|
Mai 1991
|
-2.2
|
|
|
|
Mehefin 1991
|
-2.2
|
|
|
|
Gorffennaf 1991
|
0.9
|
|
|
|
Awst 1991
|
0.9
|
|
|
|
Medi 1991
|
0.9
|
|
|
|
Hydref 1991
|
-3.3
|
|
|
|
Tachwedd 1991
|
-3.3
|
|
|
|
Rhagfyr 1991
|
-3.3
|
|
|
|
Ionawr 1992
|
0.0
|
|
|
|
Chwefror 1992
|
0.0
|
|
|
|
Mawrth 1992
|
0.0
|
|
|
|
Ebrill 1992
|
-8.0
|
|
|
|
Mai 1992
|
-8.0
|
|
|
|
Mehefin 1992
|
-8.0
|
|
|
|
Gorffennaf 1992
|
-0.3
|
|
|
|
Awst 1992
|
-0.3
|
|
|
|
Medi 1992
|
-0.3
|
|
|
|
Hydref 1992
|
-3.7
|
|
|
|
Tachwedd 1992
|
-3.7
|
|
|
|
Rhagfyr 1992
|
-3.7
|
|
|
|
Ionawr 1993
|
4.3
|
|
|
|
Chwefror 1993
|
4.3
|
|
|
|
Mawrth 1993
|
4.3
|
|
|
|
Ebrill 1993
|
2.0
|
|
|
|
Mai 1993
|
2.0
|
|
|
|
Mehefin 1993
|
2.0
|
|
|
|
Gorffennaf 1993
|
-1.0
|
|
|
|
Awst 1993
|
-1.0
|
|
|
|
Medi 1993
|
-1.0
|
|
|
|
Hydref 1993
|
-1.7
|
|
|
|
Tachwedd 1993
|
-1.7
|
|
|
|
Rhagfyr 1993
|
-1.7
|
|
|
|
Ionawr 1994
|
0.8
|
|
|
|
Chwefror 1994
|
0.8
|
|
|
|
Mawrth 1994
|
0.8
|
|
|
|
Ebrill 1994
|
7.9
|
|
|
|
Mai 1994
|
7.9
|
|
|
|
Mehefin 1994
|
7.9
|
|
|
|
Gorffennaf 1994
|
0.4
|
|
|
|
Awst 1994
|
0.4
|
|
|
|
Medi 1994
|
0.4
|
|
|
|
Hydref 1994
|
-3.2
|
|
|
|
Tachwedd 1994
|
-3.2
|
|
|
|
Rhagfyr 1994
|
-3.2
|
|
|
|
Ionawr 1995
|
|
|
|
|
Chwefror 1995
|
-2.2
|
-2.5
|
0.2
|
0.1
|
Mawrth 1995
|
1.5
|
-0.9
|
-1.2
|
-0.2
|
Ebrill 1995
|
0.8
|
0.5
|
0.2
|
0.6
|
Mai 1995
|
1.3
|
1.2
|
1.6
|
1.4
|
Mehefin 1995
|
0.2
|
-0.3
|
-0.2
|
-0.5
|
Gorffennaf 1995
|
0.5
|
2.3
|
1.1
|
1.4
|
Awst 1995
|
-0.6
|
-0.6
|
-0.6
|
-0.9
|
Medi 1995
|
-0.8
|
-0.7
|
-1.0
|
-0.6
|
Hydref 1995
|
-0.8
|
0.3
|
-0.2
|
-1.8
|
Tachwedd 1995
|
-0.2
|
-1.9
|
-0.8
|
-0.2
|
Rhagfyr 1995
|
1.4
|
1.0
|
1.3
|
1.5
|
Ionawr 1996
|
0.2
|
0.7
|
-0.0
|
0.7
|
Chwefror 1996
|
1.0
|
-0.2
|
1.2
|
0.5
|
Mawrth 1996
|
-0.5
|
0.9
|
-0.4
|
-0.1
|
Ebrill 1996
|
1.4
|
-0.5
|
0.3
|
1.0
|
Mai 1996
|
0.6
|
0.2
|
1.0
|
1.6
|
Mehefin 1996
|
1.2
|
1.8
|
0.8
|
-0.1
|
Gorffennaf 1996
|
0.8
|
2.2
|
1.3
|
1.1
|
Awst 1996
|
0.3
|
1.0
|
0.7
|
1.0
|
Medi 1996
|
0.9
|
0.7
|
0.7
|
0.4
|
Hydref 1996
|
-0.3
|
0.6
|
-0.1
|
-0.4
|
Tachwedd 1996
|
0.9
|
-1.4
|
0.4
|
1.4
|
Rhagfyr 1996
|
1.5
|
1.4
|
2.2
|
1.2
|
Ionawr 1997
|
2.0
|
2.9
|
1.3
|
1.9
|
Chwefror 1997
|
0.6
|
0.2
|
-0.3
|
-0.0
|
Mawrth 1997
|
1.2
|
0.7
|
1.4
|
1.7
|
Ebrill 1997
|
1.8
|
1.5
|
1.9
|
1.6
|
Mai 1997
|
2.8
|
3.3
|
3.1
|
2.9
|
Mehefin 1997
|
0.8
|
2.0
|
0.8
|
1.4
|
Gorffennaf 1997
|
3.2
|
3.3
|
3.6
|
3.4
|
Awst 1997
|
-0.0
|
1.0
|
0.7
|
-0.5
|
Medi 1997
|
2.2
|
2.5
|
2.0
|
2.0
|
Hydref 1997
|
-0.3
|
-0.1
|
0.1
|
-0.2
|
Tachwedd 1997
|
1.2
|
1.7
|
1.0
|
0.9
|
Rhagfyr 1997
|
1.9
|
0.2
|
2.1
|
2.3
|
Ionawr 1998
|
1.1
|
2.8
|
0.4
|
1.4
|
Chwefror 1998
|
-1.0
|
-3.2
|
-1.0
|
-1.9
|
Mawrth 1998
|
2.0
|
1.7
|
1.7
|
2.4
|
Ebrill 1998
|
2.4
|
2.7
|
2.6
|
2.5
|
Mai 1998
|
-0.2
|
-0.9
|
0.1
|
0.3
|
Mehefin 1998
|
1.8
|
1.6
|
1.2
|
1.2
|
Gorffennaf 1998
|
1.4
|
3.4
|
2.4
|
1.8
|
Awst 1998
|
-0.3
|
1.3
|
-0.2
|
-0.2
|
Medi 1998
|
0.5
|
-0.1
|
0.5
|
0.4
|
Hydref 1998
|
-0.4
|
-0.4
|
-0.3
|
-1.3
|
Tachwedd 1998
|
0.1
|
0.2
|
0.2
|
-0.0
|
Rhagfyr 1998
|
0.5
|
-1.7
|
0.0
|
1.0
|
Ionawr 1999
|
0.9
|
2.0
|
0.5
|
0.3
|
Chwefror 1999
|
-0.4
|
-0.5
|
-0.4
|
-0.5
|
Mawrth 1999
|
2.0
|
1.0
|
1.3
|
2.2
|
Ebrill 1999
|
2.1
|
2.1
|
2.0
|
2.9
|
Mai 1999
|
1.4
|
-0.1
|
0.8
|
1.0
|
Mehefin 1999
|
1.9
|
3.5
|
2.5
|
2.2
|
Gorffennaf 1999
|
3.3
|
3.8
|
2.7
|
3.4
|
Awst 1999
|
2.0
|
1.1
|
1.6
|
2.0
|
Medi 1999
|
2.7
|
3.2
|
2.0
|
1.6
|
Hydref 1999
|
0.3
|
0.5
|
1.6
|
0.2
|
Tachwedd 1999
|
2.3
|
2.1
|
2.0
|
2.9
|
Rhagfyr 1999
|
1.7
|
-0.7
|
0.7
|
1.1
|
Ionawr 2000
|
2.0
|
5.9
|
3.9
|
2.5
|
Chwefror 2000
|
1.8
|
-0.4
|
-0.0
|
1.5
|
Mawrth 2000
|
1.2
|
1.7
|
1.8
|
1.7
|
Ebrill 2000
|
4.8
|
3.3
|
3.4
|
3.6
|
Mai 2000
|
0.1
|
1.3
|
1.5
|
0.5
|
Mehefin 2000
|
1.9
|
0.4
|
1.3
|
1.6
|
Gorffennaf 2000
|
1.9
|
4.8
|
2.4
|
2.2
|
Awst 2000
|
0.7
|
-0.4
|
0.5
|
-0.3
|
Medi 2000
|
0.0
|
0.9
|
-0.5
|
0.2
|
Hydref 2000
|
-1.2
|
0.0
|
0.7
|
-1.1
|
Tachwedd 2000
|
1.4
|
-0.2
|
-1.1
|
0.5
|
Rhagfyr 2000
|
-0.1
|
-2.1
|
-0.1
|
0.2
|
Ionawr 2001
|
1.4
|
2.0
|
1.5
|
2.0
|
Chwefror 2001
|
0.2
|
1.0
|
1.0
|
0.4
|
Mawrth 2001
|
0.8
|
-1.4
|
-0.3
|
0.5
|
Ebrill 2001
|
1.3
|
1.6
|
0.7
|
1.6
|
Mai 2001
|
2.8
|
0.8
|
2.2
|
2.6
|
Mehefin 2001
|
1.0
|
0.6
|
0.8
|
0.3
|
Gorffennaf 2001
|
1.5
|
4.7
|
3.0
|
2.1
|
Awst 2001
|
2.2
|
1.1
|
1.1
|
2.1
|
Medi 2001
|
0.1
|
1.0
|
0.5
|
0.1
|
Hydref 2001
|
0.8
|
1.2
|
1.6
|
1.0
|
Tachwedd 2001
|
0.6
|
-0.5
|
0.4
|
0.0
|
Rhagfyr 2001
|
0.3
|
-1.7
|
-0.7
|
-0.5
|
Ionawr 2002
|
1.3
|
3.5
|
2.6
|
1.9
|
Chwefror 2002
|
0.4
|
-1.4
|
-0.7
|
0.8
|
Mawrth 2002
|
1.3
|
1.2
|
1.3
|
1.1
|
Ebrill 2002
|
3.2
|
2.3
|
2.4
|
2.4
|
Mai 2002
|
2.6
|
2.1
|
3.1
|
3.0
|
Mehefin 2002
|
1.8
|
0.6
|
0.3
|
1.4
|
Gorffennaf 2002
|
2.8
|
5.5
|
4.2
|
3.6
|
Awst 2002
|
2.2
|
1.2
|
2.3
|
2.4
|
Medi 2002
|
0.9
|
1.2
|
1.4
|
0.7
|
Hydref 2002
|
1.0
|
1.4
|
1.8
|
1.2
|
Tachwedd 2002
|
1.7
|
1.9
|
0.8
|
1.3
|
Rhagfyr 2002
|
0.4
|
-1.1
|
1.4
|
0.6
|
Ionawr 2003
|
1.8
|
2.7
|
0.9
|
2.9
|
Chwefror 2003
|
-0.3
|
-1.0
|
0.8
|
-1.0
|
Mawrth 2003
|
-0.4
|
0.1
|
-0.6
|
-0.2
|
Ebrill 2003
|
1.2
|
0.2
|
1.2
|
0.7
|
Mai 2003
|
1.3
|
0.7
|
1.4
|
2.3
|
Mehefin 2003
|
-0.8
|
-0.3
|
-0.9
|
-1.4
|
Gorffennaf 2003
|
2.3
|
2.1
|
2.6
|
2.9
|
Awst 2003
|
-0.5
|
-0.6
|
-0.6
|
-0.3
|
Medi 2003
|
0.1
|
1.2
|
0.6
|
0.2
|
Hydref 2003
|
0.8
|
-0.3
|
0.5
|
0.9
|
Tachwedd 2003
|
0.4
|
-0.6
|
-0.0
|
0.6
|
Rhagfyr 2003
|
0.7
|
-1.0
|
0.2
|
0.1
|
Ionawr 2004
|
0.9
|
3.2
|
1.3
|
1.4
|
Chwefror 2004
|
0.4
|
0.2
|
0.6
|
0.9
|
Mawrth 2004
|
0.7
|
-0.7
|
-0.6
|
0.5
|
Ebrill 2004
|
2.0
|
0.8
|
2.7
|
2.7
|
Mai 2004
|
0.6
|
-1.2
|
0.2
|
0.4
|
Mehefin 2004
|
1.2
|
1.9
|
0.9
|
0.8
|
Gorffennaf 2004
|
1.6
|
2.1
|
2.3
|
2.5
|
Awst 2004
|
0.4
|
1.2
|
0.1
|
0.3
|
Medi 2004
|
-0.3
|
-0.3
|
-0.2
|
-0.2
|
Hydref 2004
|
-0.8
|
-0.7
|
-0.6
|
-0.8
|
Tachwedd 2004
|
1.0
|
0.2
|
0.5
|
0.7
|
Rhagfyr 2004
|
-1.9
|
-1.8
|
-1.9
|
-1.8
|
Ionawr 2005
|
1.0
|
1.6
|
0.7
|
1.3
|
Chwefror 2005
|
-0.5
|
-1.2
|
-0.3
|
-0.6
|
Mawrth 2005
|
-0.0
|
-0.6
|
-0.4
|
0.2
|
Ebrill 2005
|
1.8
|
0.7
|
1.6
|
2.0
|
Mai 2005
|
0.1
|
1.1
|
0.5
|
-0.2
|
Mehefin 2005
|
0.1
|
-1.1
|
-0.3
|
0.8
|
Gorffennaf 2005
|
0.8
|
1.4
|
1.2
|
0.6
|
Awst 2005
|
0.0
|
0.2
|
-0.8
|
-0.0
|
Medi 2005
|
-0.4
|
0.4
|
0.6
|
0.1
|
Hydref 2005
|
-1.1
|
-1.9
|
-1.4
|
-1.4
|
Tachwedd 2005
|
1.0
|
0.6
|
0.7
|
1.0
|
Rhagfyr 2005
|
0.8
|
-1.5
|
-1.0
|
0.2
|
Ionawr 2006
|
0.6
|
3.4
|
2.2
|
1.2
|
Chwefror 2006
|
-0.3
|
-1.2
|
-0.6
|
-0.7
|
Mawrth 2006
|
1.0
|
1.2
|
0.7
|
1.2
|
Ebrill 2006
|
1.7
|
0.3
|
1.4
|
1.8
|
Mai 2006
|
0.9
|
1.1
|
0.5
|
0.5
|
Mehefin 2006
|
1.6
|
1.2
|
1.2
|
1.9
|
Gorffennaf 2006
|
1.0
|
1.6
|
1.6
|
1.7
|
Awst 2006
|
1.1
|
1.1
|
0.9
|
0.8
|
Medi 2006
|
0.3
|
1.0
|
0.4
|
-0.0
|
Hydref 2006
|
0.6
|
0.0
|
0.4
|
0.5
|
Tachwedd 2006
|
-0.1
|
0.4
|
0.5
|
0.4
|
Rhagfyr 2006
|
2.2
|
1.3
|
1.2
|
1.8
|
Ionawr 2007
|
1.2
|
1.1
|
1.0
|
1.4
|
Chwefror 2007
|
1.2
|
1.1
|
1.0
|
0.3
|
Mawrth 2007
|
1.0
|
1.0
|
0.9
|
1.9
|
Ebrill 2007
|
2.0
|
1.2
|
1.6
|
2.4
|
Mai 2007
|
1.4
|
0.5
|
1.0
|
0.6
|
Mehefin 2007
|
1.1
|
1.9
|
1.0
|
1.2
|
Gorffennaf 2007
|
3.4
|
4.3
|
4.0
|
3.6
|
Awst 2007
|
0.7
|
-0.3
|
-0.2
|
1.0
|
Medi 2007
|
0.3
|
1.2
|
0.4
|
-0.5
|
Hydref 2007
|
0.1
|
0.5
|
-0.1
|
0.0
|
Tachwedd 2007
|
-0.3
|
0.8
|
1.0
|
-0.2
|
Rhagfyr 2007
|
0.1
|
-1.6
|
-0.7
|
-0.2
|
Ionawr 2008
|
0.2
|
1.9
|
0.5
|
0.7
|
Chwefror 2008
|
-1.0
|
-1.7
|
-0.8
|
-1.2
|
Mawrth 2008
|
-0.7
|
-0.9
|
-0.5
|
0.1
|
Ebrill 2008
|
0.2
|
1.8
|
-0.0
|
-0.0
|
Mai 2008
|
0.3
|
-1.4
|
0.4
|
0.2
|
Mehefin 2008
|
-1.7
|
-1.4
|
-1.7
|
-1.2
|
Gorffennaf 2008
|
0.1
|
0.7
|
-0.4
|
-1.1
|
Awst 2008
|
-2.9
|
-2.5
|
-2.2
|
-2.6
|
Medi 2008
|
-1.9
|
-1.5
|
-2.7
|
-2.4
|
Hydref 2008
|
-3.4
|
-3.3
|
-3.3
|
-4.2
|
Tachwedd 2008
|
-3.1
|
-2.7
|
-2.3
|
-2.0
|
Rhagfyr 2008
|
-1.8
|
-2.6
|
-1.6
|
-1.5
|
Ionawr 2009
|
-0.3
|
1.0
|
-0.9
|
-1.5
|
Chwefror 2009
|
-1.3
|
-4.1
|
-1.5
|
-1.1
|
Mawrth 2009
|
-1.0
|
-0.9
|
-1.5
|
-1.4
|
Ebrill 2009
|
-0.8
|
-0.9
|
0.0
|
-0.1
|
Mai 2009
|
1.9
|
1.2
|
1.4
|
1.7
|
Mehefin 2009
|
1.4
|
1.4
|
1.2
|
2.4
|
Gorffennaf 2009
|
2.4
|
3.4
|
3.5
|
2.8
|
Awst 2009
|
0.9
|
1.5
|
1.3
|
1.0
|
Medi 2009
|
2.1
|
1.1
|
0.8
|
1.4
|
Hydref 2009
|
0.5
|
1.5
|
1.5
|
1.0
|
Tachwedd 2009
|
-0.7
|
-0.7
|
-1.1
|
-0.1
|
Rhagfyr 2009
|
1.2
|
0.3
|
1.8
|
1.2
|
Ionawr 2010
|
3.6
|
4.5
|
3.5
|
3.8
|
Chwefror 2010
|
-0.4
|
-0.2
|
0.1
|
-0.2
|
Mawrth 2010
|
0.6
|
1.6
|
0.1
|
-0.4
|
Ebrill 2010
|
0.5
|
-0.4
|
0.6
|
0.9
|
Mai 2010
|
-0.1
|
0.3
|
0.0
|
0.4
|
Mehefin 2010
|
1.0
|
0.8
|
0.6
|
1.0
|
Gorffennaf 2010
|
2.9
|
4.5
|
3.4
|
3.4
|
Awst 2010
|
-0.7
|
-1.3
|
0.2
|
-1.1
|
Medi 2010
|
-0.2
|
1.2
|
-0.6
|
-0.0
|
Hydref 2010
|
-1.4
|
-2.0
|
-1.3
|
-1.7
|
Tachwedd 2010
|
-1.3
|
-0.5
|
-0.6
|
-1.8
|
Rhagfyr 2010
|
1.1
|
-0.1
|
0.4
|
1.1
|
Ionawr 2011
|
0.9
|
3.0
|
0.7
|
1.3
|
Chwefror 2011
|
-1.0
|
-0.9
|
-0.9
|
-1.7
|
Mawrth 2011
|
0.6
|
0.6
|
-0.5
|
0.3
|
Ebrill 2011
|
2.4
|
-0.6
|
1.3
|
2.7
|
Mai 2011
|
-3.2
|
-3.1
|
-1.2
|
-2.8
|
Mehefin 2011
|
0.4
|
-1.0
|
-0.4
|
0.4
|
Gorffennaf 2011
|
3.5
|
3.8
|
2.8
|
3.5
|
Awst 2011
|
-0.3
|
0.7
|
1.0
|
0.6
|
Medi 2011
|
0.2
|
1.4
|
-0.2
|
-0.2
|
Hydref 2011
|
-1.0
|
-0.2
|
0.2
|
-1.5
|
Tachwedd 2011
|
-0.4
|
-1.1
|
-1.4
|
-1.0
|
Rhagfyr 2011
|
0.4
|
-1.0
|
0.6
|
0.9
|
Ionawr 2012
|
0.7
|
0.2
|
0.6
|
1.2
|
Chwefror 2012
|
-0.7
|
2.6
|
0.6
|
-0.1
|
Mawrth 2012
|
-0.7
|
-4.4
|
-2.6
|
-1.0
|
Ebrill 2012
|
3.0
|
3.2
|
2.6
|
2.5
|
Mai 2012
|
1.7
|
1.5
|
2.0
|
2.2
|
Mehefin 2012
|
0.9
|
-0.5
|
-0.0
|
1.4
|
Gorffennaf 2012
|
0.7
|
2.2
|
1.4
|
0.8
|
Awst 2012
|
0.4
|
0.4
|
0.6
|
0.6
|
Medi 2012
|
-0.5
|
-0.4
|
-0.9
|
-0.8
|
Hydref 2012
|
0.6
|
0.2
|
0.6
|
0.2
|
Tachwedd 2012
|
-0.6
|
-0.2
|
-0.4
|
-0.3
|
Rhagfyr 2012
|
1.7
|
0.8
|
0.6
|
1.8
|
Ionawr 2013
|
-0.8
|
0.2
|
0.7
|
-1.0
|
Chwefror 2013
|
0.7
|
-0.1
|
-0.6
|
0.5
|
Mawrth 2013
|
-0.4
|
0.4
|
0.1
|
-0.3
|
Ebrill 2013
|
2.8
|
0.9
|
1.2
|
2.5
|
Mai 2013
|
0.4
|
1.4
|
1.5
|
0.6
|
Mehefin 2013
|
0.7
|
-0.1
|
0.1
|
1.0
|
Gorffennaf 2013
|
2.6
|
2.0
|
2.1
|
2.7
|
Awst 2013
|
0.8
|
1.5
|
1.7
|
1.1
|
Medi 2013
|
1.4
|
1.1
|
-0.2
|
0.9
|
Hydref 2013
|
-0.1
|
0.2
|
1.0
|
-0.6
|
Tachwedd 2013
|
1.1
|
0.3
|
0.8
|
1.3
|
Rhagfyr 2013
|
2.4
|
0.2
|
1.0
|
2.2
|
Ionawr 2014
|
1.1
|
3.1
|
2.0
|
1.2
|
Chwefror 2014
|
0.6
|
0.9
|
0.4
|
0.3
|
Mawrth 2014
|
1.0
|
-0.2
|
0.5
|
1.1
|
Ebrill 2014
|
3.9
|
4.8
|
4.3
|
4.5
|
Mai 2014
|
2.0
|
0.6
|
1.3
|
1.7
|
Mehefin 2014
|
1.2
|
1.0
|
1.2
|
1.5
|
Gorffennaf 2014
|
3.0
|
4.2
|
4.2
|
3.6
|
Awst 2014
|
1.5
|
1.5
|
1.4
|
1.6
|
Medi 2014
|
-0.3
|
-0.1
|
-0.6
|
-0.7
|
Hydref 2014
|
-0.3
|
0.3
|
0.5
|
-0.4
|
Tachwedd 2014
|
-0.4
|
0.3
|
0.2
|
-0.2
|
Rhagfyr 2014
|
0.5
|
-0.5
|
-0.6
|
0.1
|
Ionawr 2015
|
-0.0
|
0.5
|
0.5
|
-0.1
|
Chwefror 2015
|
0.5
|
0.7
|
0.4
|
0.5
|
Mawrth 2015
|
-0.0
|
-0.2
|
0.1
|
-0.1
|
Ebrill 2015
|
1.4
|
1.7
|
1.3
|
2.1
|
Mai 2015
|
1.3
|
-0.2
|
1.0
|
0.7
|
Mehefin 2015
|
0.9
|
1.8
|
1.6
|
2.2
|
Gorffennaf 2015
|
2.9
|
2.0
|
2.7
|
2.8
|
Awst 2015
|
1.0
|
2.3
|
1.7
|
1.2
|
Medi 2015
|
0.8
|
1.8
|
0.4
|
0.4
|
Hydref 2015
|
0.2
|
0.5
|
1.6
|
1.0
|
Tachwedd 2015
|
1.1
|
0.5
|
0.6
|
0.7
|
Rhagfyr 2015
|
1.0
|
2.0
|
1.5
|
1.0
|
Ionawr 2016
|
1.6
|
0.2
|
1.9
|
1.6
|
Chwefror 2016
|
0.1
|
2.0
|
0.7
|
0.5
|
Mawrth 2016
|
1.5
|
1.1
|
-0.1
|
1.0
|
Ebrill 2016
|
-0.8
|
-1.6
|
0.3
|
0.0
|
Mai 2016
|
1.4
|
0.6
|
1.2
|
0.9
|
Mehefin 2016
|
0.1
|
2.4
|
0.4
|
0.4
|
Gorffennaf 2016
|
1.6
|
0.9
|
2.2
|
2.0
|
Awst 2016
|
-0.8
|
-0.4
|
-0.7
|
-1.0
|
Medi 2016
|
-0.0
|
-0.6
|
-0.6
|
-0.4
|
Hydref 2016
|
-0.2
|
-0.0
|
0.1
|
-0.9
|
Tachwedd 2016
|
-0.0
|
0.4
|
-0.7
|
-0.3
|
Rhagfyr 2016
|
0.3
|
0.1
|
0.0
|
0.6
|
Ionawr 2017
|
0.7
|
0.7
|
1.2
|
0.9
|
Chwefror 2017
|
0.2
|
-0.6
|
-1.0
|
-1.0
|
Mawrth 2017
|
-0.3
|
0.7
|
0.6
|
0.6
|
Ebrill 2017
|
0.9
|
0.6
|
0.2
|
0.6
|
Mai 2017
|
0.2
|
-1.0
|
0.7
|
-0.1
|
Mehefin 2017
|
-0.2
|
0.0
|
-0.4
|
0.6
|
Gorffennaf 2017
|
1.7
|
1.4
|
2.3
|
1.8
|
Awst 2017
|
-0.3
|
0.2
|
-0.4
|
0.3
|
Medi 2017
|
-0.7
|
1.0
|
-0.2
|
-1.0
|
Hydref 2017
|
-0.4
|
-0.5
|
0.3
|
-0.5
|
Tachwedd 2017
|
-1.1
|
-1.8
|
-1.2
|
-1.2
|
Rhagfyr 2017
|
0.1
|
0.7
|
-0.0
|
0.3
|
Ionawr 2018
|
0.6
|
-0.4
|
0.6
|
0.2
|
Chwefror 2018
|
-0.4
|
0.3
|
-0.4
|
-0.2
|
Mawrth 2018
|
-1.2
|
-0.9
|
-0.4
|
-0.5
|
Ebrill 2018
|
1.0
|
1.0
|
1.2
|
1.2
|
Mai 2018
|
0.3
|
0.5
|
0.5
|
0.8
|
Mehefin 2018
|
0.3
|
0.7
|
1.0
|
-0.0
|
Gorffennaf 2018
|
1.0
|
2.2
|
0.7
|
1.5
|
Awst 2018
|
-1.1
|
-1.8
|
-1.4
|
-1.3
|
Medi 2018
|
-0.6
|
0.0
|
0.0
|
-0.4
|
Hydref 2018
|
0.7
|
0.7
|
0.5
|
0.5
|
Tachwedd 2018
|
-1.2
|
-0.6
|
-1.0
|
-0.8
|
Rhagfyr 2018
|
-0.2
|
-1.6
|
-0.2
|
-0.8
|
Ionawr 2019
|
-0.7
|
1.2
|
-0.3
|
-0.4
|
Chwefror 2019
|
-0.8
|
-1.4
|
-1.2
|
-0.7
|
Mawrth 2019
|
-0.4
|
-2.0
|
-0.8
|
-0.3
|
Ebrill 2019
|
1.2
|
0.8
|
0.7
|
1.4
|
Mai 2019
|
-1.3
|
-1.0
|
-0.6
|
-0.7
|
Mehefin 2019
|
1.5
|
1.7
|
2.1
|
1.0
|
Gorffennaf 2019
|
1.7
|
0.8
|
0.4
|
1.5
|
Awst 2019
|
-1.2
|
0.3
|
-0.1
|
0.3
|
Medi 2019
|
0.9
|
-0.1
|
-0.4
|
-0.4
|
Hydref 2019
|
-0.9
|
-0.1
|
1.0
|
-0.7
|
Tachwedd 2019
|
-0.8
|
0.4
|
-0.7
|
-0.0
|
Rhagfyr 2019
|
2.2
|
0.5
|
0.8
|
1.5
|
Ionawr 2020
|
-0.7
|
-1.8
|
-0.8
|
-0.9
|
Chwefror 2020
|
-0.3
|
2.4
|
0.8
|
0.6
|
Mawrth 2020
|
1.7
|
0.5
|
1.2
|
0.8
|
Ebrill 2020
|
-1.3
|
0.4
|
-1.0
|
-0.6
|
Mai 2020
|
-0.6
|
-1.5
|
-0.6
|
-1.0
|
Mehefin 2020
|
1.4
|
-0.1
|
1.9
|
2.6
|
Gorffennaf 2020
|
0.8
|
1.5
|
0.4
|
0.1
|
Awst 2020
|
1.2
|
1.9
|
1.9
|
2.0
|
Medi 2020
|
0.8
|
0.4
|
0.5
|
0.9
|
Hydref 2020
|
-1.4
|
-0.2
|
-0.7
|
-0.6
|
Tachwedd 2020
|
1.7
|
2.1
|
1.8
|
1.6
|
Rhagfyr 2020
|
-0.1
|
-0.2
|
0.4
|
0.3
|
Ionawr 2021
|
0.0
|
-1.9
|
-1.2
|
-1.2
|
Chwefror 2021
|
-0.7
|
-0.8
|
-0.7
|
-1.1
|
Mawrth 2021
|
1.7
|
0.4
|
0.8
|
1.4
|
Ebrill 2021
|
-2.0
|
0.8
|
-0.5
|
-1.6
|
Mai 2021
|
-0.1
|
0.0
|
0.0
|
-0.1
|
Mehefin 2021
|
3.0
|
1.1
|
2.2
|
4.3
|
Gorffennaf 2021
|
-1.6
|
0.9
|
-2.5
|
-4.7
|
Dyddiad
|
Pob math o eiddo
|
Tai ar wahân
|
Tai pâr
|
Tai teras
|
Ionawr 1980
|
6.0
|
|
|
|
Chwefror 1980
|
6.0
|
|
|
|
Mawrth 1980
|
6.0
|
|
|
|
Ebrill 1980
|
6.3
|
|
|
|
Mai 1980
|
6.3
|
|
|
|
Mehefin 1980
|
6.3
|
|
|
|
Gorffennaf 1980
|
6.3
|
|
|
|
Awst 1980
|
6.3
|
|
|
|
Medi 1980
|
6.3
|
|
|
|
Hydref 1980
|
6.4
|
|
|
|
Tachwedd 1980
|
6.4
|
|
|
|
Rhagfyr 1980
|
6.4
|
|
|
|
Ionawr 1981
|
6.2
|
|
|
|
Chwefror 1981
|
6.2
|
|
|
|
Mawrth 1981
|
6.2
|
|
|
|
Ebrill 1981
|
6.6
|
|
|
|
Mai 1981
|
6.6
|
|
|
|
Mehefin 1981
|
6.6
|
|
|
|
Gorffennaf 1981
|
6.5
|
|
|
|
Awst 1981
|
6.5
|
|
|
|
Medi 1981
|
6.5
|
|
|
|
Hydref 1981
|
6.6
|
|
|
|
Tachwedd 1981
|
6.6
|
|
|
|
Rhagfyr 1981
|
6.6
|
|
|
|
Ionawr 1982
|
6.1
|
|
|
|
Chwefror 1982
|
6.1
|
|
|
|
Mawrth 1982
|
6.1
|
|
|
|
Ebrill 1982
|
6.6
|
|
|
|
Mai 1982
|
6.6
|
|
|
|
Mehefin 1982
|
6.6
|
|
|
|
Gorffennaf 1982
|
6.7
|
|
|
|
Awst 1982
|
6.7
|
|
|
|
Medi 1982
|
6.7
|
|
|
|
Hydref 1982
|
6.9
|
|
|
|
Tachwedd 1982
|
6.9
|
|
|
|
Rhagfyr 1982
|
6.9
|
|
|
|
Ionawr 1983
|
7.0
|
|
|
|
Chwefror 1983
|
7.0
|
|
|
|
Mawrth 1983
|
7.0
|
|
|
|
Ebrill 1983
|
7.2
|
|
|
|
Mai 1983
|
7.2
|
|
|
|
Mehefin 1983
|
7.2
|
|
|
|
Gorffennaf 1983
|
7.5
|
|
|
|
Awst 1983
|
7.5
|
|
|
|
Medi 1983
|
7.5
|
|
|
|
Hydref 1983
|
7.7
|
|
|
|
Tachwedd 1983
|
7.7
|
|
|
|
Rhagfyr 1983
|
7.7
|
|
|
|
Ionawr 1984
|
7.8
|
|
|
|
Chwefror 1984
|
7.8
|
|
|
|
Mawrth 1984
|
7.8
|
|
|
|
Ebrill 1984
|
8.6
|
|
|
|
Mai 1984
|
8.6
|
|
|
|
Mehefin 1984
|
8.6
|
|
|
|
Gorffennaf 1984
|
8.8
|
|
|
|
Awst 1984
|
8.8
|
|
|
|
Medi 1984
|
8.8
|
|
|
|
Hydref 1984
|
9.0
|
|
|
|
Tachwedd 1984
|
9.0
|
|
|
|
Rhagfyr 1984
|
9.0
|
|
|
|
Ionawr 1985
|
8.9
|
|
|
|
Chwefror 1985
|
8.9
|
|
|
|
Mawrth 1985
|
8.9
|
|
|
|
Ebrill 1985
|
9.6
|
|
|
|
Mai 1985
|
9.6
|
|
|
|
Mehefin 1985
|
9.6
|
|
|
|
Gorffennaf 1985
|
9.8
|
|
|
|
Awst 1985
|
9.8
|
|
|
|
Medi 1985
|
9.8
|
|
|
|
Hydref 1985
|
10.4
|
|
|
|
Tachwedd 1985
|
10.4
|
|
|
|
Rhagfyr 1985
|
10.4
|
|
|
|
Ionawr 1986
|
10.8
|
|
|
|
Chwefror 1986
|
10.8
|
|
|
|
Mawrth 1986
|
10.8
|
|
|
|
Ebrill 1986
|
11.7
|
|
|
|
Mai 1986
|
11.7
|
|
|
|
Mehefin 1986
|
11.7
|
|
|
|
Gorffennaf 1986
|
12.2
|
|
|
|
Awst 1986
|
12.2
|
|
|
|
Medi 1986
|
12.2
|
|
|
|
Hydref 1986
|
13.0
|
|
|
|
Tachwedd 1986
|
13.0
|
|
|
|
Rhagfyr 1986
|
13.0
|
|
|
|
Ionawr 1987
|
13.4
|
|
|
|
Chwefror 1987
|
13.4
|
|
|
|
Mawrth 1987
|
13.4
|
|
|
|
Ebrill 1987
|
14.1
|
|
|
|
Mai 1987
|
14.1
|
|
|
|
Mehefin 1987
|
14.1
|
|
|
|
Gorffennaf 1987
|
15.0
|
|
|
|
Awst 1987
|
15.0
|
|
|
|
Medi 1987
|
15.0
|
|
|
|
Hydref 1987
|
16.2
|
|
|
|
Tachwedd 1987
|
16.2
|
|
|
|
Rhagfyr 1987
|
16.2
|
|
|
|
Ionawr 1988
|
16.7
|
|
|
|
Chwefror 1988
|
16.7
|
|
|
|
Mawrth 1988
|
16.7
|
|
|
|
Ebrill 1988
|
17.6
|
|
|
|
Mai 1988
|
17.6
|
|
|
|
Mehefin 1988
|
17.6
|
|
|
|
Gorffennaf 1988
|
18.9
|
|
|
|
Awst 1988
|
18.9
|
|
|
|
Medi 1988
|
18.9
|
|
|
|
Hydref 1988
|
20.2
|
|
|
|
Tachwedd 1988
|
20.2
|
|
|
|
Rhagfyr 1988
|
20.2
|
|
|
|
Ionawr 1989
|
19.4
|
|
|
|
Chwefror 1989
|
19.4
|
|
|
|
Mawrth 1989
|
19.4
|
|
|
|
Ebrill 1989
|
20.3
|
|
|
|
Mai 1989
|
20.3
|
|
|
|
Mehefin 1989
|
20.3
|
|
|
|
Gorffennaf 1989
|
20.0
|
|
|
|
Awst 1989
|
20.0
|
|
|
|
Medi 1989
|
20.0
|
|
|
|
Hydref 1989
|
19.5
|
|
|
|
Tachwedd 1989
|
19.5
|
|
|
|
Rhagfyr 1989
|
19.5
|
|
|
|
Ionawr 1990
|
19.8
|
|
|
|
Chwefror 1990
|
19.8
|
|
|
|
Mawrth 1990
|
19.8
|
|
|
|
Ebrill 1990
|
19.2
|
|
|
|
Mai 1990
|
19.2
|
|
|
|
Mehefin 1990
|
19.2
|
|
|
|
Gorffennaf 1990
|
20.2
|
|
|
|
Awst 1990
|
20.2
|
|
|
|
Medi 1990
|
20.2
|
|
|
|
Hydref 1990
|
18.8
|
|
|
|
Tachwedd 1990
|
18.8
|
|
|
|
Rhagfyr 1990
|
18.8
|
|
|
|
Ionawr 1991
|
19.1
|
|
|
|
Chwefror 1991
|
19.1
|
|
|
|
Mawrth 1991
|
19.1
|
|
|
|
Ebrill 1991
|
18.7
|
|
|
|
Mai 1991
|
18.7
|
|
|
|
Mehefin 1991
|
18.7
|
|
|
|
Gorffennaf 1991
|
18.8
|
|
|
|
Awst 1991
|
18.8
|
|
|
|
Medi 1991
|
18.8
|
|
|
|
Hydref 1991
|
18.2
|
|
|
|
Tachwedd 1991
|
18.2
|
|
|
|
Rhagfyr 1991
|
18.2
|
|
|
|
Ionawr 1992
|
18.2
|
|
|
|
Chwefror 1992
|
18.2
|
|
|
|
Mawrth 1992
|
18.2
|
|
|
|
Ebrill 1992
|
16.8
|
|
|
|
Mai 1992
|
16.8
|
|
|
|
Mehefin 1992
|
16.8
|
|
|
|
Gorffennaf 1992
|
16.7
|
|
|
|
Awst 1992
|
16.7
|
|
|
|
Medi 1992
|
16.7
|
|
|
|
Hydref 1992
|
16.1
|
|
|
|
Tachwedd 1992
|
16.1
|
|
|
|
Rhagfyr 1992
|
16.1
|
|
|
|
Ionawr 1993
|
16.8
|
|
|
|
Chwefror 1993
|
16.8
|
|
|
|
Mawrth 1993
|
16.8
|
|
|
|
Ebrill 1993
|
17.1
|
|
|
|
Mai 1993
|
17.1
|
|
|
|
Mehefin 1993
|
17.1
|
|
|
|
Gorffennaf 1993
|
16.9
|
|
|
|
Awst 1993
|
16.9
|
|
|
|
Medi 1993
|
16.9
|
|
|
|
Hydref 1993
|
16.7
|
|
|
|
Tachwedd 1993
|
16.7
|
|
|
|
Rhagfyr 1993
|
16.7
|
|
|
|
Ionawr 1994
|
16.8
|
|
|
|
Chwefror 1994
|
16.8
|
|
|
|
Mawrth 1994
|
16.8
|
|
|
|
Ebrill 1994
|
18.1
|
|
|
|
Mai 1994
|
18.1
|
|
|
|
Mehefin 1994
|
18.1
|
|
|
|
Gorffennaf 1994
|
18.2
|
|
|
|
Awst 1994
|
18.2
|
|
|
|
Medi 1994
|
18.2
|
|
|
|
Hydref 1994
|
17.6
|
|
|
|
Tachwedd 1994
|
17.6
|
|
|
|
Rhagfyr 1994
|
17.6
|
|
|
|
Ionawr 1995
|
18.5
|
21.7
|
20.3
|
18.0
|
Chwefror 1995
|
18.1
|
21.2
|
20.4
|
18.0
|
Mawrth 1995
|
18.3
|
21.0
|
20.1
|
18.0
|
Ebrill 1995
|
18.5
|
21.1
|
20.2
|
18.1
|
Mai 1995
|
18.7
|
21.4
|
20.5
|
18.4
|
Mehefin 1995
|
18.8
|
21.3
|
20.5
|
18.3
|
Gorffennaf 1995
|
18.9
|
21.8
|
20.7
|
18.5
|
Awst 1995
|
18.8
|
21.6
|
20.6
|
18.4
|
Medi 1995
|
18.6
|
21.5
|
20.4
|
18.2
|
Hydref 1995
|
18.4
|
21.6
|
20.3
|
17.9
|
Tachwedd 1995
|
18.4
|
21.1
|
20.2
|
17.9
|
Rhagfyr 1995
|
18.7
|
21.4
|
20.4
|
18.2
|
Ionawr 1996
|
18.7
|
21.5
|
20.4
|
18.3
|
Chwefror 1996
|
18.9
|
21.5
|
20.7
|
18.4
|
Mawrth 1996
|
18.8
|
21.7
|
20.6
|
18.4
|
Ebrill 1996
|
19.1
|
21.6
|
20.6
|
18.5
|
Mai 1996
|
19.2
|
21.6
|
20.8
|
18.8
|
Mehefin 1996
|
19.4
|
22.0
|
21.0
|
18.8
|
Gorffennaf 1996
|
19.6
|
22.5
|
21.3
|
19.0
|
Awst 1996
|
19.6
|
22.7
|
21.4
|
19.2
|
Medi 1996
|
19.8
|
22.9
|
21.6
|
19.3
|
Hydref 1996
|
19.7
|
23.0
|
21.6
|
19.2
|
Tachwedd 1996
|
19.9
|
22.7
|
21.6
|
19.5
|
Rhagfyr 1996
|
20.2
|
23.0
|
22.1
|
19.7
|
Ionawr 1997
|
20.6
|
23.7
|
22.4
|
20.1
|
Chwefror 1997
|
20.8
|
23.7
|
22.3
|
20.1
|
Mawrth 1997
|
21.0
|
23.9
|
22.6
|
20.4
|
Ebrill 1997
|
21.4
|
24.3
|
23.1
|
20.8
|
Mai 1997
|
22.0
|
25.1
|
23.8
|
21.4
|
Mehefin 1997
|
22.2
|
25.6
|
24.0
|
21.7
|
Gorffennaf 1997
|
22.9
|
26.4
|
24.9
|
22.4
|
Awst 1997
|
22.9
|
26.6
|
25.0
|
22.3
|
Medi 1997
|
23.4
|
27.3
|
25.5
|
22.7
|
Hydref 1997
|
23.3
|
27.3
|
25.6
|
22.7
|
Tachwedd 1997
|
23.6
|
27.8
|
25.8
|
22.9
|
Rhagfyr 1997
|
24.0
|
27.8
|
26.4
|
23.4
|
Ionawr 1998
|
24.3
|
28.6
|
26.5
|
23.7
|
Chwefror 1998
|
24.1
|
27.7
|
26.2
|
23.3
|
Mawrth 1998
|
24.6
|
28.1
|
26.6
|
23.8
|
Ebrill 1998
|
25.1
|
28.9
|
27.3
|
24.4
|
Mai 1998
|
25.1
|
28.6
|
27.4
|
24.5
|
Mehefin 1998
|
25.5
|
29.1
|
27.7
|
24.8
|
Gorffennaf 1998
|
25.9
|
30.1
|
28.4
|
25.2
|
Awst 1998
|
25.8
|
30.5
|
28.3
|
25.2
|
Medi 1998
|
26.0
|
30.4
|
28.4
|
25.3
|
Hydref 1998
|
25.9
|
30.3
|
28.4
|
24.9
|
Tachwedd 1998
|
25.9
|
30.4
|
28.4
|
24.9
|
Rhagfyr 1998
|
26.0
|
29.9
|
28.4
|
25.2
|
Ionawr 1999
|
26.2
|
30.5
|
28.6
|
25.3
|
Chwefror 1999
|
26.1
|
30.3
|
28.4
|
25.2
|
Mawrth 1999
|
26.7
|
30.6
|
28.8
|
25.7
|
Ebrill 1999
|
27.2
|
31.3
|
29.4
|
26.4
|
Mai 1999
|
27.6
|
31.2
|
29.6
|
26.7
|
Mehefin 1999
|
28.1
|
32.3
|
30.4
|
27.3
|
Gorffennaf 1999
|
29.0
|
33.6
|
31.2
|
28.2
|
Awst 1999
|
29.6
|
33.9
|
31.7
|
28.8
|
Medi 1999
|
30.4
|
35.0
|
32.3
|
29.3
|
Hydref 1999
|
30.5
|
35.2
|
32.8
|
29.3
|
Tachwedd 1999
|
31.2
|
35.9
|
33.5
|
30.2
|
Rhagfyr 1999
|
31.8
|
35.7
|
33.7
|
30.5
|
Ionawr 2000
|
32.4
|
37.8
|
35.0
|
31.3
|
Chwefror 2000
|
32.9
|
37.6
|
35.0
|
31.7
|
Mawrth 2000
|
33.3
|
38.3
|
35.7
|
32.3
|
Ebrill 2000
|
34.9
|
39.5
|
36.9
|
33.4
|
Mai 2000
|
35.0
|
40.0
|
37.5
|
33.6
|
Mehefin 2000
|
35.6
|
40.2
|
37.9
|
34.1
|
Gorffennaf 2000
|
36.3
|
42.1
|
38.9
|
34.9
|
Awst 2000
|
36.6
|
42.0
|
39.0
|
34.8
|
Medi 2000
|
36.6
|
42.3
|
38.8
|
34.9
|
Hydref 2000
|
36.2
|
42.3
|
39.1
|
34.5
|
Tachwedd 2000
|
36.7
|
42.3
|
38.7
|
34.6
|
Rhagfyr 2000
|
36.6
|
41.4
|
38.7
|
34.7
|
Ionawr 2001
|
37.1
|
42.2
|
39.3
|
35.4
|
Chwefror 2001
|
37.2
|
42.6
|
39.7
|
35.6
|
Mawrth 2001
|
37.5
|
42.0
|
39.5
|
35.7
|
Ebrill 2001
|
38.0
|
42.7
|
39.8
|
36.3
|
Mai 2001
|
39.0
|
43.1
|
40.7
|
37.3
|
Mehefin 2001
|
39.4
|
43.3
|
41.1
|
37.4
|
Gorffennaf 2001
|
40.0
|
45.3
|
42.3
|
38.2
|
Awst 2001
|
40.9
|
45.8
|
42.8
|
39.0
|
Medi 2001
|
40.9
|
46.3
|
43.0
|
39.0
|
Hydref 2001
|
41.2
|
46.9
|
43.6
|
39.4
|
Tachwedd 2001
|
41.5
|
46.6
|
43.8
|
39.4
|
Rhagfyr 2001
|
41.6
|
45.8
|
43.5
|
39.2
|
Ionawr 2002
|
42.2
|
47.4
|
44.6
|
40.0
|
Chwefror 2002
|
42.3
|
46.7
|
44.4
|
40.3
|
Mawrth 2002
|
42.9
|
47.3
|
44.9
|
40.7
|
Ebrill 2002
|
44.2
|
48.4
|
46.0
|
41.7
|
Mai 2002
|
45.4
|
49.4
|
47.4
|
43.0
|
Mehefin 2002
|
46.2
|
49.7
|
47.6
|
43.6
|
Gorffennaf 2002
|
47.4
|
52.4
|
49.6
|
45.2
|
Awst 2002
|
48.5
|
53.1
|
50.7
|
46.2
|
Medi 2002
|
48.9
|
53.7
|
51.4
|
46.6
|
Hydref 2002
|
49.4
|
54.4
|
52.3
|
47.1
|
Tachwedd 2002
|
50.3
|
55.5
|
52.7
|
47.7
|
Rhagfyr 2002
|
50.5
|
54.9
|
53.5
|
48.0
|
Ionawr 2003
|
51.4
|
56.4
|
54.0
|
49.4
|
Chwefror 2003
|
51.2
|
55.8
|
54.4
|
48.9
|
Mawrth 2003
|
51.0
|
55.9
|
54.0
|
48.8
|
Ebrill 2003
|
51.6
|
55.9
|
54.7
|
49.2
|
Mai 2003
|
52.3
|
56.4
|
55.4
|
50.3
|
Mehefin 2003
|
51.9
|
56.2
|
54.9
|
49.6
|
Gorffennaf 2003
|
53.1
|
57.4
|
56.4
|
51.1
|
Awst 2003
|
52.8
|
57.0
|
56.0
|
50.9
|
Medi 2003
|
52.8
|
57.7
|
56.4
|
51.0
|
Hydref 2003
|
53.3
|
57.5
|
56.7
|
51.4
|
Tachwedd 2003
|
53.5
|
57.2
|
56.6
|
51.7
|
Rhagfyr 2003
|
53.9
|
56.6
|
56.8
|
51.8
|
Ionawr 2004
|
54.3
|
58.4
|
57.5
|
52.5
|
Chwefror 2004
|
54.6
|
58.5
|
57.9
|
52.9
|
Mawrth 2004
|
54.9
|
58.1
|
57.5
|
53.2
|
Ebrill 2004
|
56.1
|
58.6
|
59.0
|
54.6
|
Mai 2004
|
56.4
|
57.9
|
59.2
|
54.8
|
Mehefin 2004
|
57.1
|
59.0
|
59.7
|
55.2
|
Gorffennaf 2004
|
58.1
|
60.2
|
61.1
|
56.6
|
Awst 2004
|
58.3
|
60.9
|
61.2
|
56.8
|
Medi 2004
|
58.1
|
60.7
|
61.1
|
56.7
|
Hydref 2004
|
57.7
|
60.3
|
60.7
|
56.3
|
Tachwedd 2004
|
58.3
|
60.4
|
61.0
|
56.7
|
Rhagfyr 2004
|
57.1
|
59.4
|
59.8
|
55.6
|
Ionawr 2005
|
57.7
|
60.3
|
60.3
|
56.4
|
Chwefror 2005
|
57.4
|
59.6
|
60.1
|
56.1
|
Mawrth 2005
|
57.4
|
59.2
|
59.8
|
56.2
|
Ebrill 2005
|
58.4
|
59.6
|
60.8
|
57.3
|
Mai 2005
|
58.5
|
60.2
|
61.1
|
57.2
|
Mehefin 2005
|
58.6
|
59.6
|
60.9
|
57.7
|
Gorffennaf 2005
|
59.0
|
60.4
|
61.6
|
58.0
|
Awst 2005
|
59.1
|
60.5
|
61.2
|
58.0
|
Medi 2005
|
58.8
|
60.8
|
61.5
|
58.0
|
Hydref 2005
|
58.2
|
59.6
|
60.6
|
57.3
|
Tachwedd 2005
|
58.7
|
59.9
|
61.1
|
57.8
|
Rhagfyr 2005
|
59.2
|
59.0
|
60.5
|
58.0
|
Ionawr 2006
|
59.5
|
61.1
|
61.8
|
58.7
|
Chwefror 2006
|
59.4
|
60.3
|
61.4
|
58.3
|
Mawrth 2006
|
59.9
|
61.1
|
61.9
|
59.0
|
Ebrill 2006
|
60.9
|
61.3
|
62.8
|
60.1
|
Mai 2006
|
61.5
|
61.9
|
63.1
|
60.4
|
Mehefin 2006
|
62.4
|
62.7
|
63.8
|
61.6
|
Gorffennaf 2006
|
63.0
|
63.6
|
64.9
|
62.6
|
Awst 2006
|
63.7
|
64.4
|
65.5
|
63.1
|
Medi 2006
|
63.9
|
65.0
|
65.7
|
63.0
|
Hydref 2006
|
64.3
|
65.0
|
66.0
|
63.4
|
Tachwedd 2006
|
64.2
|
65.2
|
66.2
|
63.6
|
Rhagfyr 2006
|
65.7
|
66.1
|
67.1
|
64.7
|
Ionawr 2007
|
66.4
|
66.8
|
67.7
|
65.6
|
Chwefror 2007
|
67.2
|
67.5
|
68.4
|
65.8
|
Mawrth 2007
|
67.9
|
68.1
|
69.0
|
67.0
|
Ebrill 2007
|
69.2
|
69.0
|
70.1
|
68.6
|
Mai 2007
|
70.2
|
69.3
|
70.8
|
69.1
|
Mehefin 2007
|
71.0
|
70.6
|
71.5
|
69.9
|
Gorffennaf 2007
|
73.4
|
73.7
|
74.4
|
72.4
|
Awst 2007
|
73.9
|
73.5
|
74.2
|
73.1
|
Medi 2007
|
74.1
|
74.4
|
74.5
|
72.8
|
Hydref 2007
|
74.1
|
74.8
|
74.5
|
72.8
|
Tachwedd 2007
|
73.9
|
75.4
|
75.2
|
72.6
|
Rhagfyr 2007
|
74.0
|
74.2
|
74.7
|
72.4
|
Ionawr 2008
|
74.1
|
75.6
|
75.0
|
72.9
|
Chwefror 2008
|
73.4
|
74.4
|
74.4
|
72.0
|
Mawrth 2008
|
72.9
|
73.7
|
74.1
|
72.1
|
Ebrill 2008
|
73.1
|
75.0
|
74.1
|
72.1
|
Mai 2008
|
73.3
|
74.0
|
74.3
|
72.2
|
Mehefin 2008
|
72.0
|
73.0
|
73.1
|
71.4
|
Gorffennaf 2008
|
72.0
|
73.5
|
72.8
|
70.6
|
Awst 2008
|
69.9
|
71.6
|
71.2
|
68.8
|
Medi 2008
|
68.6
|
70.5
|
69.3
|
67.1
|
Hydref 2008
|
66.3
|
68.2
|
67.0
|
64.3
|
Tachwedd 2008
|
64.2
|
66.3
|
65.4
|
63.0
|
Rhagfyr 2008
|
63.0
|
64.6
|
64.4
|
62.1
|
Ionawr 2009
|
62.8
|
65.2
|
63.8
|
61.2
|
Chwefror 2009
|
62.0
|
62.6
|
62.8
|
60.5
|
Mawrth 2009
|
61.4
|
62.0
|
61.8
|
59.7
|
Ebrill 2009
|
60.9
|
61.4
|
61.8
|
59.6
|
Mai 2009
|
62.1
|
62.2
|
62.7
|
60.7
|
Mehefin 2009
|
63.0
|
63.0
|
63.5
|
62.2
|
Gorffennaf 2009
|
64.5
|
65.2
|
65.7
|
63.9
|
Awst 2009
|
65.1
|
66.2
|
66.6
|
64.5
|
Medi 2009
|
66.4
|
66.9
|
67.1
|
65.5
|
Hydref 2009
|
66.7
|
67.9
|
68.2
|
66.1
|
Tachwedd 2009
|
66.2
|
67.4
|
67.4
|
66.0
|
Rhagfyr 2009
|
67.0
|
67.6
|
68.6
|
66.8
|
Ionawr 2010
|
69.4
|
70.7
|
71.0
|
69.3
|
Chwefror 2010
|
69.2
|
70.5
|
71.1
|
69.2
|
Mawrth 2010
|
69.6
|
71.7
|
71.2
|
68.9
|
Ebrill 2010
|
70.0
|
71.4
|
71.6
|
69.6
|
Mai 2010
|
69.9
|
71.6
|
71.6
|
69.8
|
Mehefin 2010
|
70.6
|
72.1
|
72.0
|
70.5
|
Gorffennaf 2010
|
72.7
|
75.4
|
74.5
|
72.9
|
Awst 2010
|
72.2
|
74.3
|
74.7
|
72.1
|
Medi 2010
|
72.0
|
75.2
|
74.2
|
72.1
|
Hydref 2010
|
71.0
|
73.8
|
73.2
|
70.9
|
Tachwedd 2010
|
70.1
|
73.4
|
72.8
|
69.6
|
Rhagfyr 2010
|
70.8
|
73.3
|
73.0
|
70.4
|
Ionawr 2011
|
71.5
|
75.5
|
73.6
|
71.3
|
Chwefror 2011
|
70.8
|
74.8
|
72.9
|
70.1
|
Mawrth 2011
|
71.3
|
75.3
|
72.5
|
70.3
|
Ebrill 2011
|
73.0
|
74.9
|
73.5
|
72.2
|
Mai 2011
|
70.7
|
72.6
|
72.6
|
70.2
|
Mehefin 2011
|
71.0
|
71.9
|
72.2
|
70.4
|
Gorffennaf 2011
|
73.4
|
74.7
|
74.3
|
72.9
|
Awst 2011
|
73.2
|
75.2
|
75.0
|
73.4
|
Medi 2011
|
73.3
|
76.2
|
74.9
|
73.2
|
Hydref 2011
|
72.6
|
76.1
|
75.0
|
72.1
|
Tachwedd 2011
|
72.2
|
75.2
|
74.0
|
71.4
|
Rhagfyr 2011
|
72.6
|
74.5
|
74.4
|
72.0
|
Ionawr 2012
|
73.1
|
74.6
|
74.8
|
72.8
|
Chwefror 2012
|
72.6
|
76.6
|
75.2
|
72.8
|
Mawrth 2012
|
72.1
|
73.2
|
73.2
|
72.0
|
Ebrill 2012
|
74.2
|
75.6
|
75.2
|
73.8
|
Mai 2012
|
75.5
|
76.7
|
76.7
|
75.4
|
Mehefin 2012
|
76.2
|
76.4
|
76.6
|
76.5
|
Gorffennaf 2012
|
76.7
|
78.0
|
77.7
|
77.1
|
Awst 2012
|
77.0
|
78.3
|
78.2
|
77.5
|
Medi 2012
|
76.6
|
78.0
|
77.5
|
76.8
|
Hydref 2012
|
77.0
|
78.1
|
77.9
|
77.0
|
Tachwedd 2012
|
76.6
|
78.0
|
77.7
|
76.8
|
Rhagfyr 2012
|
77.9
|
78.6
|
78.1
|
78.2
|
Ionawr 2013
|
77.3
|
78.7
|
78.7
|
77.4
|
Chwefror 2013
|
77.8
|
78.7
|
78.3
|
77.8
|
Mawrth 2013
|
77.5
|
79.0
|
78.4
|
77.6
|
Ebrill 2013
|
79.7
|
79.7
|
79.3
|
79.5
|
Mai 2013
|
80.0
|
80.8
|
80.5
|
80.0
|
Mehefin 2013
|
80.6
|
80.8
|
80.6
|
80.8
|
Gorffennaf 2013
|
82.7
|
82.3
|
82.3
|
83.0
|
Awst 2013
|
83.3
|
83.5
|
83.7
|
83.9
|
Medi 2013
|
84.5
|
84.5
|
83.5
|
84.6
|
Hydref 2013
|
84.4
|
84.6
|
84.4
|
84.1
|
Tachwedd 2013
|
85.3
|
84.9
|
85.1
|
85.2
|
Rhagfyr 2013
|
87.4
|
85.1
|
86.0
|
87.0
|
Ionawr 2014
|
88.3
|
87.7
|
87.7
|
88.1
|
Chwefror 2014
|
88.8
|
88.5
|
88.1
|
88.3
|
Mawrth 2014
|
89.7
|
88.3
|
88.5
|
89.3
|
Ebrill 2014
|
93.2
|
92.6
|
92.3
|
93.4
|
Mai 2014
|
95.0
|
93.1
|
93.5
|
94.9
|
Mehefin 2014
|
96.1
|
94.0
|
94.6
|
96.3
|
Gorffennaf 2014
|
99.0
|
98.0
|
98.6
|
99.8
|
Awst 2014
|
100.5
|
99.4
|
99.9
|
101.4
|
Medi 2014
|
100.2
|
99.4
|
99.3
|
100.7
|
Hydref 2014
|
99.9
|
99.7
|
99.8
|
100.3
|
Tachwedd 2014
|
99.5
|
100.0
|
100.0
|
100.1
|
Rhagfyr 2014
|
100.0
|
99.5
|
99.5
|
100.1
|
Ionawr 2015
|
100.0
|
100.0
|
100.0
|
100.0
|
Chwefror 2015
|
100.5
|
100.7
|
100.4
|
100.5
|
Mawrth 2015
|
100.5
|
100.4
|
100.5
|
100.4
|
Ebrill 2015
|
101.9
|
102.2
|
101.8
|
102.5
|
Mai 2015
|
103.2
|
102.0
|
102.9
|
103.2
|
Mehefin 2015
|
104.1
|
103.8
|
104.5
|
105.6
|
Gorffennaf 2015
|
107.2
|
106.0
|
107.3
|
108.5
|
Awst 2015
|
108.3
|
108.4
|
109.1
|
109.8
|
Medi 2015
|
109.2
|
110.4
|
109.6
|
110.2
|
Hydref 2015
|
109.3
|
110.9
|
111.3
|
111.4
|
Tachwedd 2015
|
110.6
|
111.5
|
112.0
|
112.1
|
Rhagfyr 2015
|
111.7
|
113.6
|
113.7
|
113.2
|
Ionawr 2016
|
113.6
|
113.9
|
115.9
|
115.0
|
Chwefror 2016
|
113.6
|
116.2
|
116.6
|
115.6
|
Mawrth 2016
|
115.3
|
117.5
|
116.5
|
116.7
|
Ebrill 2016
|
114.4
|
115.6
|
116.9
|
116.7
|
Mai 2016
|
116.0
|
116.3
|
118.2
|
117.8
|
Mehefin 2016
|
116.2
|
119.0
|
118.7
|
118.2
|
Gorffennaf 2016
|
118.0
|
120.1
|
121.4
|
120.6
|
Awst 2016
|
117.2
|
119.6
|
120.5
|
119.4
|
Medi 2016
|
117.1
|
118.9
|
119.8
|
119.0
|
Hydref 2016
|
116.9
|
118.8
|
119.9
|
118.0
|
Tachwedd 2016
|
116.9
|
119.2
|
119.1
|
117.6
|
Rhagfyr 2016
|
117.3
|
119.3
|
119.2
|
118.2
|
Ionawr 2017
|
118.1
|
120.2
|
120.6
|
119.3
|
Chwefror 2017
|
118.3
|
119.4
|
119.4
|
118.0
|
Mawrth 2017
|
118.0
|
120.2
|
120.1
|
118.7
|
Ebrill 2017
|
119.1
|
120.9
|
120.3
|
119.4
|
Mai 2017
|
119.4
|
119.8
|
121.1
|
119.3
|
Mehefin 2017
|
119.2
|
119.8
|
120.6
|
120.0
|
Gorffennaf 2017
|
121.3
|
121.5
|
123.4
|
122.2
|
Awst 2017
|
120.9
|
121.7
|
122.9
|
122.6
|
Medi 2017
|
120.1
|
122.8
|
122.6
|
121.4
|
Hydref 2017
|
119.6
|
122.2
|
123.0
|
120.8
|
Tachwedd 2017
|
118.2
|
120.1
|
121.5
|
119.4
|
Rhagfyr 2017
|
118.4
|
120.9
|
121.5
|
119.7
|
Ionawr 2018
|
119.1
|
120.5
|
122.2
|
120.0
|
Chwefror 2018
|
118.6
|
120.8
|
121.7
|
119.7
|
Mawrth 2018
|
117.2
|
119.7
|
121.2
|
119.1
|
Ebrill 2018
|
118.5
|
120.9
|
122.7
|
120.6
|
Mai 2018
|
118.8
|
121.5
|
123.3
|
121.6
|
Mehefin 2018
|
119.1
|
122.3
|
124.5
|
121.6
|
Gorffennaf 2018
|
120.3
|
125.0
|
125.4
|
123.4
|
Awst 2018
|
119.0
|
122.7
|
123.7
|
121.9
|
Medi 2018
|
118.3
|
122.8
|
123.7
|
121.4
|
Hydref 2018
|
119.2
|
123.6
|
124.3
|
122.0
|
Tachwedd 2018
|
117.8
|
122.9
|
123.1
|
121.0
|
Rhagfyr 2018
|
117.5
|
121.0
|
122.9
|
119.9
|
Ionawr 2019
|
116.7
|
122.4
|
122.5
|
119.4
|
Chwefror 2019
|
115.7
|
120.7
|
121.0
|
118.6
|
Mawrth 2019
|
115.2
|
118.3
|
120.0
|
118.2
|
Ebrill 2019
|
116.6
|
119.3
|
120.9
|
119.8
|
Mai 2019
|
115.1
|
118.1
|
120.2
|
119.0
|
Mehefin 2019
|
116.8
|
120.0
|
122.8
|
120.2
|
Gorffennaf 2019
|
118.8
|
121.1
|
123.2
|
122.0
|
Awst 2019
|
117.4
|
121.4
|
123.0
|
122.4
|
Medi 2019
|
118.4
|
121.3
|
122.6
|
121.9
|
Hydref 2019
|
117.3
|
121.2
|
123.8
|
121.1
|
Tachwedd 2019
|
116.4
|
121.7
|
122.9
|
121.1
|
Rhagfyr 2019
|
118.9
|
122.2
|
123.9
|
122.9
|
Ionawr 2020
|
118.2
|
120.0
|
122.9
|
121.8
|
Chwefror 2020
|
117.8
|
122.8
|
123.9
|
122.6
|
Mawrth 2020
|
119.8
|
123.4
|
125.4
|
123.6
|
Ebrill 2020
|
118.2
|
124.0
|
124.0
|
122.9
|
Mai 2020
|
117.5
|
122.1
|
123.3
|
121.7
|
Mehefin 2020
|
119.1
|
122.0
|
125.7
|
124.8
|
Gorffennaf 2020
|
120.1
|
123.8
|
126.1
|
125.0
|
Awst 2020
|
121.5
|
126.2
|
128.5
|
127.5
|
Medi 2020
|
122.4
|
126.6
|
129.2
|
128.6
|
Hydref 2020
|
120.7
|
126.4
|
128.3
|
127.8
|
Tachwedd 2020
|
122.8
|
129.1
|
130.6
|
129.9
|
Rhagfyr 2020
|
122.7
|
128.8
|
131.2
|
130.3
|
Ionawr 2021
|
122.7
|
126.3
|
129.6
|
128.7
|
Chwefror 2021
|
121.8
|
125.2
|
128.7
|
127.3
|
Mawrth 2021
|
123.9
|
125.8
|
129.7
|
129.1
|
Ebrill 2021
|
121.4
|
126.8
|
129.0
|
127.0
|
Mai 2021
|
121.2
|
126.8
|
129.0
|
126.9
|
Mehefin 2021
|
124.8
|
128.3
|
131.9
|
132.3
|
Gorffennaf 2021
|
122.8
|
129.4
|
128.5
|
126.1
|
Statws y prynwr
Tracio’r mynegai, pris cyfartalog a’r newid misol a blynyddol yn ôl y math o brynwr e.e. Prynwr am y Tro Cyntaf neu Gyn Berchen-Feddiannydd
Statws cyllido
Tracio’r mynegai, pris cyfartalog a’r newid misol a blynyddol a nifer y gwerthiannau yn ôl statws cyllido, e.e. Arian Parod/Morgais
Dyddiad
|
Pryniannau morgais
|
Ionawr 1980
|
|
Chwefror 1980
|
|
Mawrth 1980
|
|
Ebrill 1980
|
|
Mai 1980
|
|
Mehefin 1980
|
|
Gorffennaf 1980
|
|
Awst 1980
|
|
Medi 1980
|
|
Hydref 1980
|
|
Tachwedd 1980
|
|
Rhagfyr 1980
|
|
Ionawr 1981
|
|
Chwefror 1981
|
|
Mawrth 1981
|
|
Ebrill 1981
|
|
Mai 1981
|
|
Mehefin 1981
|
|
Gorffennaf 1981
|
|
Awst 1981
|
|
Medi 1981
|
|
Hydref 1981
|
|
Tachwedd 1981
|
|
Rhagfyr 1981
|
|
Ionawr 1982
|
|
Chwefror 1982
|
|
Mawrth 1982
|
|
Ebrill 1982
|
|
Mai 1982
|
|
Mehefin 1982
|
|
Gorffennaf 1982
|
|
Awst 1982
|
|
Medi 1982
|
|
Hydref 1982
|
|
Tachwedd 1982
|
|
Rhagfyr 1982
|
|
Ionawr 1983
|
|
Chwefror 1983
|
|
Mawrth 1983
|
|
Ebrill 1983
|
|
Mai 1983
|
|
Mehefin 1983
|
|
Gorffennaf 1983
|
|
Awst 1983
|
|
Medi 1983
|
|
Hydref 1983
|
|
Tachwedd 1983
|
|
Rhagfyr 1983
|
|
Ionawr 1984
|
|
Chwefror 1984
|
|
Mawrth 1984
|
|
Ebrill 1984
|
|
Mai 1984
|
|
Mehefin 1984
|
|
Gorffennaf 1984
|
|
Awst 1984
|
|
Medi 1984
|
|
Hydref 1984
|
|
Tachwedd 1984
|
|
Rhagfyr 1984
|
|
Ionawr 1985
|
|
Chwefror 1985
|
|
Mawrth 1985
|
|
Ebrill 1985
|
|
Mai 1985
|
|
Mehefin 1985
|
|
Gorffennaf 1985
|
|
Awst 1985
|
|
Medi 1985
|
|
Hydref 1985
|
|
Tachwedd 1985
|
|
Rhagfyr 1985
|
|
Ionawr 1986
|
|
Chwefror 1986
|
|
Mawrth 1986
|
|
Ebrill 1986
|
|
Mai 1986
|
|
Mehefin 1986
|
|
Gorffennaf 1986
|
|
Awst 1986
|
|
Medi 1986
|
|
Hydref 1986
|
|
Tachwedd 1986
|
|
Rhagfyr 1986
|
|
Ionawr 1987
|
|
Chwefror 1987
|
|
Mawrth 1987
|
|
Ebrill 1987
|
|
Mai 1987
|
|
Mehefin 1987
|
|
Gorffennaf 1987
|
|
Awst 1987
|
|
Medi 1987
|
|
Hydref 1987
|
|
Tachwedd 1987
|
|
Rhagfyr 1987
|
|
Ionawr 1988
|
|
Chwefror 1988
|
|
Mawrth 1988
|
|
Ebrill 1988
|
|
Mai 1988
|
|
Mehefin 1988
|
|
Gorffennaf 1988
|
|
Awst 1988
|
|
Medi 1988
|
|
Hydref 1988
|
|
Tachwedd 1988
|
|
Rhagfyr 1988
|
|
Ionawr 1989
|
|
Chwefror 1989
|
|
Mawrth 1989
|
|
Ebrill 1989
|
|
Mai 1989
|
|
Mehefin 1989
|
|
Gorffennaf 1989
|
|
Awst 1989
|
|
Medi 1989
|
|
Hydref 1989
|
|
Tachwedd 1989
|
|
Rhagfyr 1989
|
|
Ionawr 1990
|
|
Chwefror 1990
|
|
Mawrth 1990
|
|
Ebrill 1990
|
|
Mai 1990
|
|
Mehefin 1990
|
|
Gorffennaf 1990
|
|
Awst 1990
|
|
Medi 1990
|
|
Hydref 1990
|
|
Tachwedd 1990
|
|
Rhagfyr 1990
|
|
Ionawr 1991
|
|
Chwefror 1991
|
|
Mawrth 1991
|
|
Ebrill 1991
|
|
Mai 1991
|
|
Mehefin 1991
|
|
Gorffennaf 1991
|
|
Awst 1991
|
|
Medi 1991
|
|
Hydref 1991
|
|
Tachwedd 1991
|
|
Rhagfyr 1991
|
|
Ionawr 1992
|
|
Chwefror 1992
|
|
Mawrth 1992
|
|
Ebrill 1992
|
|
Mai 1992
|
|
Mehefin 1992
|
|
Gorffennaf 1992
|
|
Awst 1992
|
|
Medi 1992
|
|
Hydref 1992
|
|
Tachwedd 1992
|
|
Rhagfyr 1992
|
|
Ionawr 1993
|
|
Chwefror 1993
|
|
Mawrth 1993
|
|
Ebrill 1993
|
|
Mai 1993
|
|
Mehefin 1993
|
|
Gorffennaf 1993
|
|
Awst 1993
|
|
Medi 1993
|
|
Hydref 1993
|
|
Tachwedd 1993
|
|
Rhagfyr 1993
|
|
Ionawr 1994
|
|
Chwefror 1994
|
|
Mawrth 1994
|
|
Ebrill 1994
|
|
Mai 1994
|
|
Mehefin 1994
|
|
Gorffennaf 1994
|
|
Awst 1994
|
|
Medi 1994
|
|
Hydref 1994
|
|
Tachwedd 1994
|
|
Rhagfyr 1994
|
|
Ionawr 1995
|
|
Chwefror 1995
|
|
Mawrth 1995
|
|
Ebrill 1995
|
|
Mai 1995
|
|
Mehefin 1995
|
|
Gorffennaf 1995
|
|
Awst 1995
|
|
Medi 1995
|
|
Hydref 1995
|
|
Tachwedd 1995
|
|
Rhagfyr 1995
|
|
Ionawr 1996
|
|
Chwefror 1996
|
|
Mawrth 1996
|
|
Ebrill 1996
|
|
Mai 1996
|
|
Mehefin 1996
|
|
Gorffennaf 1996
|
|
Awst 1996
|
|
Medi 1996
|
|
Hydref 1996
|
|
Tachwedd 1996
|
|
Rhagfyr 1996
|
|
Ionawr 1997
|
|
Chwefror 1997
|
|
Mawrth 1997
|
|
Ebrill 1997
|
|
Mai 1997
|
|
Mehefin 1997
|
|
Gorffennaf 1997
|
|
Awst 1997
|
|
Medi 1997
|
|
Hydref 1997
|
|
Tachwedd 1997
|
|
Rhagfyr 1997
|
|
Ionawr 1998
|
|
Chwefror 1998
|
|
Mawrth 1998
|
|
Ebrill 1998
|
|
Mai 1998
|
|
Mehefin 1998
|
|
Gorffennaf 1998
|
|
Awst 1998
|
|
Medi 1998
|
|
Hydref 1998
|
|
Tachwedd 1998
|
|
Rhagfyr 1998
|
|
Ionawr 1999
|
|
Chwefror 1999
|
|
Mawrth 1999
|
|
Ebrill 1999
|
|
Mai 1999
|
|
Mehefin 1999
|
|
Gorffennaf 1999
|
|
Awst 1999
|
|
Medi 1999
|
|
Hydref 1999
|
|
Tachwedd 1999
|
|
Rhagfyr 1999
|
|
Ionawr 2000
|
|
Chwefror 2000
|
|
Mawrth 2000
|
|
Ebrill 2000
|
|
Mai 2000
|
|
Mehefin 2000
|
|
Gorffennaf 2000
|
|
Awst 2000
|
|
Medi 2000
|
|
Hydref 2000
|
|
Tachwedd 2000
|
|
Rhagfyr 2000
|
|
Ionawr 2001
|
|
Chwefror 2001
|
|
Mawrth 2001
|
|
Ebrill 2001
|
|
Mai 2001
|
|
Mehefin 2001
|
|
Gorffennaf 2001
|
|
Awst 2001
|
|
Medi 2001
|
|
Hydref 2001
|
|
Tachwedd 2001
|
|
Rhagfyr 2001
|
|
Ionawr 2002
|
|
Chwefror 2002
|
|
Mawrth 2002
|
|
Ebrill 2002
|
|
Mai 2002
|
|
Mehefin 2002
|
|
Gorffennaf 2002
|
|
Awst 2002
|
|
Medi 2002
|
|
Hydref 2002
|
|
Tachwedd 2002
|
|
Rhagfyr 2002
|
|
Ionawr 2003
|
|
Chwefror 2003
|
|
Mawrth 2003
|
|
Ebrill 2003
|
|
Mai 2003
|
|
Mehefin 2003
|
|
Gorffennaf 2003
|
|
Awst 2003
|
|
Medi 2003
|
|
Hydref 2003
|
|
Tachwedd 2003
|
|
Rhagfyr 2003
|
|
Ionawr 2004
|
|
Chwefror 2004
|
|
Mawrth 2004
|
|
Ebrill 2004
|
|
Mai 2004
|
|
Mehefin 2004
|
|
Gorffennaf 2004
|
|
Awst 2004
|
|
Medi 2004
|
|
Hydref 2004
|
|
Tachwedd 2004
|
|
Rhagfyr 2004
|
|
Ionawr 2005
|
|
Chwefror 2005
|
|
Mawrth 2005
|
|
Ebrill 2005
|
|
Mai 2005
|
|
Mehefin 2005
|
|
Gorffennaf 2005
|
|
Awst 2005
|
|
Medi 2005
|
|
Hydref 2005
|
|
Tachwedd 2005
|
|
Rhagfyr 2005
|
|
Ionawr 2006
|
|
Chwefror 2006
|
|
Mawrth 2006
|
|
Ebrill 2006
|
|
Mai 2006
|
|
Mehefin 2006
|
|
Gorffennaf 2006
|
|
Awst 2006
|
|
Medi 2006
|
|
Hydref 2006
|
|
Tachwedd 2006
|
|
Rhagfyr 2006
|
|
Ionawr 2007
|
|
Chwefror 2007
|
|
Mawrth 2007
|
|
Ebrill 2007
|
|
Mai 2007
|
|
Mehefin 2007
|
|
Gorffennaf 2007
|
|
Awst 2007
|
|
Medi 2007
|
|
Hydref 2007
|
|
Tachwedd 2007
|
|
Rhagfyr 2007
|
|
Ionawr 2008
|
|
Chwefror 2008
|
|
Mawrth 2008
|
|
Ebrill 2008
|
|
Mai 2008
|
|
Mehefin 2008
|
|
Gorffennaf 2008
|
|
Awst 2008
|
|
Medi 2008
|
|
Hydref 2008
|
|
Tachwedd 2008
|
|
Rhagfyr 2008
|
|
Ionawr 2009
|
|
Chwefror 2009
|
|
Mawrth 2009
|
|
Ebrill 2009
|
|
Mai 2009
|
|
Mehefin 2009
|
|
Gorffennaf 2009
|
|
Awst 2009
|
|
Medi 2009
|
|
Hydref 2009
|
|
Tachwedd 2009
|
|
Rhagfyr 2009
|
|
Ionawr 2010
|
|
Chwefror 2010
|
|
Mawrth 2010
|
|
Ebrill 2010
|
|
Mai 2010
|
|
Mehefin 2010
|
|
Gorffennaf 2010
|
|
Awst 2010
|
|
Medi 2010
|
|
Hydref 2010
|
|
Tachwedd 2010
|
|
Rhagfyr 2010
|
|
Ionawr 2011
|
|
Chwefror 2011
|
|
Mawrth 2011
|
|
Ebrill 2011
|
|
Mai 2011
|
|
Mehefin 2011
|
|
Gorffennaf 2011
|
|
Awst 2011
|
|
Medi 2011
|
|
Hydref 2011
|
|
Tachwedd 2011
|
|
Rhagfyr 2011
|
|
Ionawr 2012
|
288700.0
|
Chwefror 2012
|
287619.0
|
Mawrth 2012
|
284801.0
|
Ebrill 2012
|
292829.0
|
Mai 2012
|
298142.0
|
Mehefin 2012
|
300471.0
|
Gorffennaf 2012
|
302651.0
|
Awst 2012
|
303760.0
|
Medi 2012
|
302195.0
|
Hydref 2012
|
303748.0
|
Tachwedd 2012
|
302304.0
|
Rhagfyr 2012
|
307257.0
|
Ionawr 2013
|
304840.0
|
Chwefror 2013
|
307074.0
|
Mawrth 2013
|
305649.0
|
Ebrill 2013
|
313975.0
|
Mai 2013
|
315401.0
|
Mehefin 2013
|
317605.0
|
Gorffennaf 2013
|
325842.0
|
Awst 2013
|
328704.0
|
Medi 2013
|
333124.0
|
Hydref 2013
|
333038.0
|
Tachwedd 2013
|
336574.0
|
Rhagfyr 2013
|
344458.0
|
Ionawr 2014
|
348379.0
|
Chwefror 2014
|
350202.0
|
Mawrth 2014
|
353752.0
|
Ebrill 2014
|
367603.0
|
Mai 2014
|
374840.0
|
Mehefin 2014
|
379005.0
|
Gorffennaf 2014
|
390538.0
|
Awst 2014
|
396876.0
|
Medi 2014
|
395562.0
|
Hydref 2014
|
394304.0
|
Tachwedd 2014
|
392797.0
|
Rhagfyr 2014
|
395035.0
|
Ionawr 2015
|
394640.0
|
Chwefror 2015
|
396531.0
|
Mawrth 2015
|
396800.0
|
Ebrill 2015
|
402555.0
|
Mai 2015
|
407836.0
|
Mehefin 2015
|
411760.0
|
Gorffennaf 2015
|
423542.0
|
Awst 2015
|
428536.0
|
Medi 2015
|
431328.0
|
Hydref 2015
|
433105.0
|
Tachwedd 2015
|
437378.0
|
Rhagfyr 2015
|
442175.0
|
Ionawr 2016
|
449480.0
|
Chwefror 2016
|
450556.0
|
Mawrth 2016
|
456769.0
|
Ebrill 2016
|
453296.0
|
Mai 2016
|
459788.0
|
Mehefin 2016
|
460438.0
|
Gorffennaf 2016
|
468256.0
|
Awst 2016
|
465133.0
|
Medi 2016
|
464184.0
|
Hydref 2016
|
463529.0
|
Tachwedd 2016
|
462705.0
|
Rhagfyr 2016
|
463958.0
|
Ionawr 2017
|
467471.0
|
Chwefror 2017
|
468010.0
|
Mawrth 2017
|
467291.0
|
Ebrill 2017
|
470777.0
|
Mai 2017
|
472514.0
|
Mehefin 2017
|
472560.0
|
Gorffennaf 2017
|
480389.0
|
Awst 2017
|
479282.0
|
Medi 2017
|
476370.0
|
Hydref 2017
|
473756.0
|
Tachwedd 2017
|
468010.0
|
Rhagfyr 2017
|
468694.0
|
Ionawr 2018
|
470995.0
|
Chwefror 2018
|
469827.0
|
Mawrth 2018
|
464614.0
|
Ebrill 2018
|
469554.0
|
Mai 2018
|
471773.0
|
Mehefin 2018
|
472570.0
|
Gorffennaf 2018
|
477065.0
|
Awst 2018
|
471820.0
|
Medi 2018
|
469075.0
|
Hydref 2018
|
472860.0
|
Tachwedd 2018
|
466854.0
|
Rhagfyr 2018
|
465997.0
|
Ionawr 2019
|
463240.0
|
Chwefror 2019
|
459232.0
|
Mawrth 2019
|
457472.0
|
Ebrill 2019
|
461997.0
|
Mai 2019
|
456699.0
|
Mehefin 2019
|
463613.0
|
Gorffennaf 2019
|
471695.0
|
Awst 2019
|
466793.0
|
Medi 2019
|
470416.0
|
Hydref 2019
|
466545.0
|
Tachwedd 2019
|
462590.0
|
Rhagfyr 2019
|
472123.0
|
Ionawr 2020
|
468858.0
|
Chwefror 2020
|
467687.0
|
Mawrth 2020
|
475328.0
|
Ebrill 2020
|
468698.0
|
Mai 2020
|
467036.0
|
Mehefin 2020
|
473349.0
|
Gorffennaf 2020
|
476923.0
|
Awst 2020
|
482857.0
|
Medi 2020
|
486909.0
|
Hydref 2020
|
480879.0
|
Tachwedd 2020
|
488474.0
|
Rhagfyr 2020
|
488447.0
|
Ionawr 2021
|
488397.0
|
Chwefror 2021
|
484663.0
|
Mawrth 2021
|
492775.0
|
Ebrill 2021
|
483278.0
|
Mai 2021
|
482386.0
|
Mehefin 2021
|
497491.0
|
Gorffennaf 2021
|
485525.0
|
Dyddiad
|
Pryniannau morgais
|
Ionawr 1980
|
|
Chwefror 1980
|
|
Mawrth 1980
|
|
Ebrill 1980
|
|
Mai 1980
|
|
Mehefin 1980
|
|
Gorffennaf 1980
|
|
Awst 1980
|
|
Medi 1980
|
|
Hydref 1980
|
|
Tachwedd 1980
|
|
Rhagfyr 1980
|
|
Ionawr 1981
|
|
Chwefror 1981
|
|
Mawrth 1981
|
|
Ebrill 1981
|
|
Mai 1981
|
|
Mehefin 1981
|
|
Gorffennaf 1981
|
|
Awst 1981
|
|
Medi 1981
|
|
Hydref 1981
|
|
Tachwedd 1981
|
|
Rhagfyr 1981
|
|
Ionawr 1982
|
|
Chwefror 1982
|
|
Mawrth 1982
|
|
Ebrill 1982
|
|
Mai 1982
|
|
Mehefin 1982
|
|
Gorffennaf 1982
|
|
Awst 1982
|
|
Medi 1982
|
|
Hydref 1982
|
|
Tachwedd 1982
|
|
Rhagfyr 1982
|
|
Ionawr 1983
|
|
Chwefror 1983
|
|
Mawrth 1983
|
|
Ebrill 1983
|
|
Mai 1983
|
|
Mehefin 1983
|
|
Gorffennaf 1983
|
|
Awst 1983
|
|
Medi 1983
|
|
Hydref 1983
|
|
Tachwedd 1983
|
|
Rhagfyr 1983
|
|
Ionawr 1984
|
|
Chwefror 1984
|
|
Mawrth 1984
|
|
Ebrill 1984
|
|
Mai 1984
|
|
Mehefin 1984
|
|
Gorffennaf 1984
|
|
Awst 1984
|
|
Medi 1984
|
|
Hydref 1984
|
|
Tachwedd 1984
|
|
Rhagfyr 1984
|
|
Ionawr 1985
|
|
Chwefror 1985
|
|
Mawrth 1985
|
|
Ebrill 1985
|
|
Mai 1985
|
|
Mehefin 1985
|
|
Gorffennaf 1985
|
|
Awst 1985
|
|
Medi 1985
|
|
Hydref 1985
|
|
Tachwedd 1985
|
|
Rhagfyr 1985
|
|
Ionawr 1986
|
|
Chwefror 1986
|
|
Mawrth 1986
|
|
Ebrill 1986
|
|
Mai 1986
|
|
Mehefin 1986
|
|
Gorffennaf 1986
|
|
Awst 1986
|
|
Medi 1986
|
|
Hydref 1986
|
|
Tachwedd 1986
|
|
Rhagfyr 1986
|
|
Ionawr 1987
|
|
Chwefror 1987
|
|
Mawrth 1987
|
|
Ebrill 1987
|
|
Mai 1987
|
|
Mehefin 1987
|
|
Gorffennaf 1987
|
|
Awst 1987
|
|
Medi 1987
|
|
Hydref 1987
|
|
Tachwedd 1987
|
|
Rhagfyr 1987
|
|
Ionawr 1988
|
|
Chwefror 1988
|
|
Mawrth 1988
|
|
Ebrill 1988
|
|
Mai 1988
|
|
Mehefin 1988
|
|
Gorffennaf 1988
|
|
Awst 1988
|
|
Medi 1988
|
|
Hydref 1988
|
|
Tachwedd 1988
|
|
Rhagfyr 1988
|
|
Ionawr 1989
|
|
Chwefror 1989
|
|
Mawrth 1989
|
|
Ebrill 1989
|
|
Mai 1989
|
|
Mehefin 1989
|
|
Gorffennaf 1989
|
|
Awst 1989
|
|
Medi 1989
|
|
Hydref 1989
|
|
Tachwedd 1989
|
|
Rhagfyr 1989
|
|
Ionawr 1990
|
|
Chwefror 1990
|
|
Mawrth 1990
|
|
Ebrill 1990
|
|
Mai 1990
|
|
Mehefin 1990
|
|
Gorffennaf 1990
|
|
Awst 1990
|
|
Medi 1990
|
|
Hydref 1990
|
|
Tachwedd 1990
|
|
Rhagfyr 1990
|
|
Ionawr 1991
|
|
Chwefror 1991
|
|
Mawrth 1991
|
|
Ebrill 1991
|
|
Mai 1991
|
|
Mehefin 1991
|
|
Gorffennaf 1991
|
|
Awst 1991
|
|
Medi 1991
|
|
Hydref 1991
|
|
Tachwedd 1991
|
|
Rhagfyr 1991
|
|
Ionawr 1992
|
|
Chwefror 1992
|
|
Mawrth 1992
|
|
Ebrill 1992
|
|
Mai 1992
|
|
Mehefin 1992
|
|
Gorffennaf 1992
|
|
Awst 1992
|
|
Medi 1992
|
|
Hydref 1992
|
|
Tachwedd 1992
|
|
Rhagfyr 1992
|
|
Ionawr 1993
|
|
Chwefror 1993
|
|
Mawrth 1993
|
|
Ebrill 1993
|
|
Mai 1993
|
|
Mehefin 1993
|
|
Gorffennaf 1993
|
|
Awst 1993
|
|
Medi 1993
|
|
Hydref 1993
|
|
Tachwedd 1993
|
|
Rhagfyr 1993
|
|
Ionawr 1994
|
|
Chwefror 1994
|
|
Mawrth 1994
|
|
Ebrill 1994
|
|
Mai 1994
|
|
Mehefin 1994
|
|
Gorffennaf 1994
|
|
Awst 1994
|
|
Medi 1994
|
|
Hydref 1994
|
|
Tachwedd 1994
|
|
Rhagfyr 1994
|
|
Ionawr 1995
|
|
Chwefror 1995
|
|
Mawrth 1995
|
|
Ebrill 1995
|
|
Mai 1995
|
|
Mehefin 1995
|
|
Gorffennaf 1995
|
|
Awst 1995
|
|
Medi 1995
|
|
Hydref 1995
|
|
Tachwedd 1995
|
|
Rhagfyr 1995
|
|
Ionawr 1996
|
|
Chwefror 1996
|
|
Mawrth 1996
|
|
Ebrill 1996
|
|
Mai 1996
|
|
Mehefin 1996
|
|
Gorffennaf 1996
|
|
Awst 1996
|
|
Medi 1996
|
|
Hydref 1996
|
|
Tachwedd 1996
|
|
Rhagfyr 1996
|
|
Ionawr 1997
|
|
Chwefror 1997
|
|
Mawrth 1997
|
|
Ebrill 1997
|
|
Mai 1997
|
|
Mehefin 1997
|
|
Gorffennaf 1997
|
|
Awst 1997
|
|
Medi 1997
|
|
Hydref 1997
|
|
Tachwedd 1997
|
|
Rhagfyr 1997
|
|
Ionawr 1998
|
|
Chwefror 1998
|
|
Mawrth 1998
|
|
Ebrill 1998
|
|
Mai 1998
|
|
Mehefin 1998
|
|
Gorffennaf 1998
|
|
Awst 1998
|
|
Medi 1998
|
|
Hydref 1998
|
|
Tachwedd 1998
|
|
Rhagfyr 1998
|
|
Ionawr 1999
|
|
Chwefror 1999
|
|
Mawrth 1999
|
|
Ebrill 1999
|
|
Mai 1999
|
|
Mehefin 1999
|
|
Gorffennaf 1999
|
|
Awst 1999
|
|
Medi 1999
|
|
Hydref 1999
|
|
Tachwedd 1999
|
|
Rhagfyr 1999
|
|
Ionawr 2000
|
|
Chwefror 2000
|
|
Mawrth 2000
|
|
Ebrill 2000
|
|
Mai 2000
|
|
Mehefin 2000
|
|
Gorffennaf 2000
|
|
Awst 2000
|
|
Medi 2000
|
|
Hydref 2000
|
|
Tachwedd 2000
|
|
Rhagfyr 2000
|
|
Ionawr 2001
|
|
Chwefror 2001
|
|
Mawrth 2001
|
|
Ebrill 2001
|
|
Mai 2001
|
|
Mehefin 2001
|
|
Gorffennaf 2001
|
|
Awst 2001
|
|
Medi 2001
|
|
Hydref 2001
|
|
Tachwedd 2001
|
|
Rhagfyr 2001
|
|
Ionawr 2002
|
|
Chwefror 2002
|
|
Mawrth 2002
|
|
Ebrill 2002
|
|
Mai 2002
|
|
Mehefin 2002
|
|
Gorffennaf 2002
|
|
Awst 2002
|
|
Medi 2002
|
|
Hydref 2002
|
|
Tachwedd 2002
|
|
Rhagfyr 2002
|
|
Ionawr 2003
|
|
Chwefror 2003
|
|
Mawrth 2003
|
|
Ebrill 2003
|
|
Mai 2003
|
|
Mehefin 2003
|
|
Gorffennaf 2003
|
|
Awst 2003
|
|
Medi 2003
|
|
Hydref 2003
|
|
Tachwedd 2003
|
|
Rhagfyr 2003
|
|
Ionawr 2004
|
|
Chwefror 2004
|
|
Mawrth 2004
|
|
Ebrill 2004
|
|
Mai 2004
|
|
Mehefin 2004
|
|
Gorffennaf 2004
|
|
Awst 2004
|
|
Medi 2004
|
|
Hydref 2004
|
|
Tachwedd 2004
|
|
Rhagfyr 2004
|
|
Ionawr 2005
|
|
Chwefror 2005
|
|
Mawrth 2005
|
|
Ebrill 2005
|
|
Mai 2005
|
|
Mehefin 2005
|
|
Gorffennaf 2005
|
|
Awst 2005
|
|
Medi 2005
|
|
Hydref 2005
|
|
Tachwedd 2005
|
|
Rhagfyr 2005
|
|
Ionawr 2006
|
|
Chwefror 2006
|
|
Mawrth 2006
|
|
Ebrill 2006
|
|
Mai 2006
|
|
Mehefin 2006
|
|
Gorffennaf 2006
|
|
Awst 2006
|
|
Medi 2006
|
|
Hydref 2006
|
|
Tachwedd 2006
|
|
Rhagfyr 2006
|
|
Ionawr 2007
|
|
Chwefror 2007
|
|
Mawrth 2007
|
|
Ebrill 2007
|
|
Mai 2007
|
|
Mehefin 2007
|
|
Gorffennaf 2007
|
|
Awst 2007
|
|
Medi 2007
|
|
Hydref 2007
|
|
Tachwedd 2007
|
|
Rhagfyr 2007
|
|
Ionawr 2008
|
|
Chwefror 2008
|
|
Mawrth 2008
|
|
Ebrill 2008
|
|
Mai 2008
|
|
Mehefin 2008
|
|
Gorffennaf 2008
|
|
Awst 2008
|
|
Medi 2008
|
|
Hydref 2008
|
|
Tachwedd 2008
|
|
Rhagfyr 2008
|
|
Ionawr 2009
|
|
Chwefror 2009
|
|
Mawrth 2009
|
|
Ebrill 2009
|
|
Mai 2009
|
|
Mehefin 2009
|
|
Gorffennaf 2009
|
|
Awst 2009
|
|
Medi 2009
|
|
Hydref 2009
|
|
Tachwedd 2009
|
|
Rhagfyr 2009
|
|
Ionawr 2010
|
|
Chwefror 2010
|
|
Mawrth 2010
|
|
Ebrill 2010
|
|
Mai 2010
|
|
Mehefin 2010
|
|
Gorffennaf 2010
|
|
Awst 2010
|
|
Medi 2010
|
|
Hydref 2010
|
|
Tachwedd 2010
|
|
Rhagfyr 2010
|
|
Ionawr 2011
|
|
Chwefror 2011
|
|
Mawrth 2011
|
|
Ebrill 2011
|
|
Mai 2011
|
|
Mehefin 2011
|
|
Gorffennaf 2011
|
|
Awst 2011
|
|
Medi 2011
|
|
Hydref 2011
|
|
Tachwedd 2011
|
|
Rhagfyr 2011
|
|
Ionawr 2012
|
|
Chwefror 2012
|
|
Mawrth 2012
|
|
Ebrill 2012
|
|
Mai 2012
|
|
Mehefin 2012
|
|
Gorffennaf 2012
|
|
Awst 2012
|
|
Medi 2012
|
|
Hydref 2012
|
|
Tachwedd 2012
|
|
Rhagfyr 2012
|
|
Ionawr 2013
|
5.6
|
Chwefror 2013
|
6.8
|
Mawrth 2013
|
7.3
|
Ebrill 2013
|
7.2
|
Mai 2013
|
5.8
|
Mehefin 2013
|
5.7
|
Gorffennaf 2013
|
7.7
|
Awst 2013
|
8.2
|
Medi 2013
|
10.2
|
Hydref 2013
|
9.6
|
Tachwedd 2013
|
11.3
|
Rhagfyr 2013
|
12.1
|
Ionawr 2014
|
14.3
|
Chwefror 2014
|
14.0
|
Mawrth 2014
|
15.7
|
Ebrill 2014
|
17.1
|
Mai 2014
|
18.8
|
Mehefin 2014
|
19.3
|
Gorffennaf 2014
|
19.8
|
Awst 2014
|
20.7
|
Medi 2014
|
18.7
|
Hydref 2014
|
18.4
|
Tachwedd 2014
|
16.7
|
Rhagfyr 2014
|
14.7
|
Ionawr 2015
|
13.3
|
Chwefror 2015
|
13.2
|
Mawrth 2015
|
12.2
|
Ebrill 2015
|
9.5
|
Mai 2015
|
8.8
|
Mehefin 2015
|
8.6
|
Gorffennaf 2015
|
8.4
|
Awst 2015
|
8.0
|
Medi 2015
|
9.0
|
Hydref 2015
|
9.8
|
Tachwedd 2015
|
11.4
|
Rhagfyr 2015
|
11.9
|
Ionawr 2016
|
13.9
|
Chwefror 2016
|
13.6
|
Mawrth 2016
|
15.1
|
Ebrill 2016
|
12.6
|
Mai 2016
|
12.7
|
Mehefin 2016
|
11.8
|
Gorffennaf 2016
|
10.6
|
Awst 2016
|
8.5
|
Medi 2016
|
7.6
|
Hydref 2016
|
7.0
|
Tachwedd 2016
|
5.8
|
Rhagfyr 2016
|
4.9
|
Ionawr 2017
|
4.0
|
Chwefror 2017
|
3.9
|
Mawrth 2017
|
2.3
|
Ebrill 2017
|
3.9
|
Mai 2017
|
2.8
|
Mehefin 2017
|
2.6
|
Gorffennaf 2017
|
2.6
|
Awst 2017
|
3.0
|
Medi 2017
|
2.6
|
Hydref 2017
|
2.2
|
Tachwedd 2017
|
1.2
|
Rhagfyr 2017
|
1.0
|
Ionawr 2018
|
0.8
|
Chwefror 2018
|
0.4
|
Mawrth 2018
|
-0.6
|
Ebrill 2018
|
-0.3
|
Mai 2018
|
-0.2
|
Mehefin 2018
|
0.0
|
Gorffennaf 2018
|
-0.7
|
Awst 2018
|
-1.6
|
Medi 2018
|
-1.5
|
Hydref 2018
|
-0.2
|
Tachwedd 2018
|
-0.2
|
Rhagfyr 2018
|
-0.6
|
Ionawr 2019
|
-1.6
|
Chwefror 2019
|
-2.2
|
Mawrth 2019
|
-1.5
|
Ebrill 2019
|
-1.6
|
Mai 2019
|
-3.2
|
Mehefin 2019
|
-1.9
|
Gorffennaf 2019
|
-1.1
|
Awst 2019
|
-1.1
|
Medi 2019
|
0.3
|
Hydref 2019
|
-1.3
|
Tachwedd 2019
|
-0.9
|
Rhagfyr 2019
|
1.3
|
Ionawr 2020
|
1.2
|
Chwefror 2020
|
1.8
|
Mawrth 2020
|
3.9
|
Ebrill 2020
|
1.4
|
Mai 2020
|
2.3
|
Mehefin 2020
|
2.1
|
Gorffennaf 2020
|
1.1
|
Awst 2020
|
3.4
|
Medi 2020
|
3.5
|
Hydref 2020
|
3.1
|
Tachwedd 2020
|
5.6
|
Rhagfyr 2020
|
3.5
|
Ionawr 2021
|
4.2
|
Chwefror 2021
|
3.6
|
Mawrth 2021
|
3.7
|
Ebrill 2021
|
3.1
|
Mai 2021
|
3.3
|
Mehefin 2021
|
5.1
|
Gorffennaf 2021
|
1.8
|
Dyddiad
|
Pryniannau morgais
|
Ionawr 1980
|
|
Chwefror 1980
|
|
Mawrth 1980
|
|
Ebrill 1980
|
|
Mai 1980
|
|
Mehefin 1980
|
|
Gorffennaf 1980
|
|
Awst 1980
|
|
Medi 1980
|
|
Hydref 1980
|
|
Tachwedd 1980
|
|
Rhagfyr 1980
|
|
Ionawr 1981
|
|
Chwefror 1981
|
|
Mawrth 1981
|
|
Ebrill 1981
|
|
Mai 1981
|
|
Mehefin 1981
|
|
Gorffennaf 1981
|
|
Awst 1981
|
|
Medi 1981
|
|
Hydref 1981
|
|
Tachwedd 1981
|
|
Rhagfyr 1981
|
|
Ionawr 1982
|
|
Chwefror 1982
|
|
Mawrth 1982
|
|
Ebrill 1982
|
|
Mai 1982
|
|
Mehefin 1982
|
|
Gorffennaf 1982
|
|
Awst 1982
|
|
Medi 1982
|
|
Hydref 1982
|
|
Tachwedd 1982
|
|
Rhagfyr 1982
|
|
Ionawr 1983
|
|
Chwefror 1983
|
|
Mawrth 1983
|
|
Ebrill 1983
|
|
Mai 1983
|
|
Mehefin 1983
|
|
Gorffennaf 1983
|
|
Awst 1983
|
|
Medi 1983
|
|
Hydref 1983
|
|
Tachwedd 1983
|
|
Rhagfyr 1983
|
|
Ionawr 1984
|
|
Chwefror 1984
|
|
Mawrth 1984
|
|
Ebrill 1984
|
|
Mai 1984
|
|
Mehefin 1984
|
|
Gorffennaf 1984
|
|
Awst 1984
|
|
Medi 1984
|
|
Hydref 1984
|
|
Tachwedd 1984
|
|
Rhagfyr 1984
|
|
Ionawr 1985
|
|
Chwefror 1985
|
|
Mawrth 1985
|
|
Ebrill 1985
|
|
Mai 1985
|
|
Mehefin 1985
|
|
Gorffennaf 1985
|
|
Awst 1985
|
|
Medi 1985
|
|
Hydref 1985
|
|
Tachwedd 1985
|
|
Rhagfyr 1985
|
|
Ionawr 1986
|
|
Chwefror 1986
|
|
Mawrth 1986
|
|
Ebrill 1986
|
|
Mai 1986
|
|
Mehefin 1986
|
|
Gorffennaf 1986
|
|
Awst 1986
|
|
Medi 1986
|
|
Hydref 1986
|
|
Tachwedd 1986
|
|
Rhagfyr 1986
|
|
Ionawr 1987
|
|
Chwefror 1987
|
|
Mawrth 1987
|
|
Ebrill 1987
|
|
Mai 1987
|
|
Mehefin 1987
|
|
Gorffennaf 1987
|
|
Awst 1987
|
|
Medi 1987
|
|
Hydref 1987
|
|
Tachwedd 1987
|
|
Rhagfyr 1987
|
|
Ionawr 1988
|
|
Chwefror 1988
|
|
Mawrth 1988
|
|
Ebrill 1988
|
|
Mai 1988
|
|
Mehefin 1988
|
|
Gorffennaf 1988
|
|
Awst 1988
|
|
Medi 1988
|
|
Hydref 1988
|
|
Tachwedd 1988
|
|
Rhagfyr 1988
|
|
Ionawr 1989
|
|
Chwefror 1989
|
|
Mawrth 1989
|
|
Ebrill 1989
|
|
Mai 1989
|
|
Mehefin 1989
|
|
Gorffennaf 1989
|
|
Awst 1989
|
|
Medi 1989
|
|
Hydref 1989
|
|
Tachwedd 1989
|
|
Rhagfyr 1989
|
|
Ionawr 1990
|
|
Chwefror 1990
|
|
Mawrth 1990
|
|
Ebrill 1990
|
|
Mai 1990
|
|
Mehefin 1990
|
|
Gorffennaf 1990
|
|
Awst 1990
|
|
Medi 1990
|
|
Hydref 1990
|
|
Tachwedd 1990
|
|
Rhagfyr 1990
|
|
Ionawr 1991
|
|
Chwefror 1991
|
|
Mawrth 1991
|
|
Ebrill 1991
|
|
Mai 1991
|
|
Mehefin 1991
|
|
Gorffennaf 1991
|
|
Awst 1991
|
|
Medi 1991
|
|
Hydref 1991
|
|
Tachwedd 1991
|
|
Rhagfyr 1991
|
|
Ionawr 1992
|
|
Chwefror 1992
|
|
Mawrth 1992
|
|
Ebrill 1992
|
|
Mai 1992
|
|
Mehefin 1992
|
|
Gorffennaf 1992
|
|
Awst 1992
|
|
Medi 1992
|
|
Hydref 1992
|
|
Tachwedd 1992
|
|
Rhagfyr 1992
|
|
Ionawr 1993
|
|
Chwefror 1993
|
|
Mawrth 1993
|
|
Ebrill 1993
|
|
Mai 1993
|
|
Mehefin 1993
|
|
Gorffennaf 1993
|
|
Awst 1993
|
|
Medi 1993
|
|
Hydref 1993
|
|
Tachwedd 1993
|
|
Rhagfyr 1993
|
|
Ionawr 1994
|
|
Chwefror 1994
|
|
Mawrth 1994
|
|
Ebrill 1994
|
|
Mai 1994
|
|
Mehefin 1994
|
|
Gorffennaf 1994
|
|
Awst 1994
|
|
Medi 1994
|
|
Hydref 1994
|
|
Tachwedd 1994
|
|
Rhagfyr 1994
|
|
Ionawr 1995
|
|
Chwefror 1995
|
|
Mawrth 1995
|
|
Ebrill 1995
|
|
Mai 1995
|
|
Mehefin 1995
|
|
Gorffennaf 1995
|
|
Awst 1995
|
|
Medi 1995
|
|
Hydref 1995
|
|
Tachwedd 1995
|
|
Rhagfyr 1995
|
|
Ionawr 1996
|
|
Chwefror 1996
|
|
Mawrth 1996
|
|
Ebrill 1996
|
|
Mai 1996
|
|
Mehefin 1996
|
|
Gorffennaf 1996
|
|
Awst 1996
|
|
Medi 1996
|
|
Hydref 1996
|
|
Tachwedd 1996
|
|
Rhagfyr 1996
|
|
Ionawr 1997
|
|
Chwefror 1997
|
|
Mawrth 1997
|
|
Ebrill 1997
|
|
Mai 1997
|
|
Mehefin 1997
|
|
Gorffennaf 1997
|
|
Awst 1997
|
|
Medi 1997
|
|
Hydref 1997
|
|
Tachwedd 1997
|
|
Rhagfyr 1997
|
|
Ionawr 1998
|
|
Chwefror 1998
|
|
Mawrth 1998
|
|
Ebrill 1998
|
|
Mai 1998
|
|
Mehefin 1998
|
|
Gorffennaf 1998
|
|
Awst 1998
|
|
Medi 1998
|
|
Hydref 1998
|
|
Tachwedd 1998
|
|
Rhagfyr 1998
|
|
Ionawr 1999
|
|
Chwefror 1999
|
|
Mawrth 1999
|
|
Ebrill 1999
|
|
Mai 1999
|
|
Mehefin 1999
|
|
Gorffennaf 1999
|
|
Awst 1999
|
|
Medi 1999
|
|
Hydref 1999
|
|
Tachwedd 1999
|
|
Rhagfyr 1999
|
|
Ionawr 2000
|
|
Chwefror 2000
|
|
Mawrth 2000
|
|
Ebrill 2000
|
|
Mai 2000
|
|
Mehefin 2000
|
|
Gorffennaf 2000
|
|
Awst 2000
|
|
Medi 2000
|
|
Hydref 2000
|
|
Tachwedd 2000
|
|
Rhagfyr 2000
|
|
Ionawr 2001
|
|
Chwefror 2001
|
|
Mawrth 2001
|
|
Ebrill 2001
|
|
Mai 2001
|
|
Mehefin 2001
|
|
Gorffennaf 2001
|
|
Awst 2001
|
|
Medi 2001
|
|
Hydref 2001
|
|
Tachwedd 2001
|
|
Rhagfyr 2001
|
|
Ionawr 2002
|
|
Chwefror 2002
|
|
Mawrth 2002
|
|
Ebrill 2002
|
|
Mai 2002
|
|
Mehefin 2002
|
|
Gorffennaf 2002
|
|
Awst 2002
|
|
Medi 2002
|
|
Hydref 2002
|
|
Tachwedd 2002
|
|
Rhagfyr 2002
|
|
Ionawr 2003
|
|
Chwefror 2003
|
|
Mawrth 2003
|
|
Ebrill 2003
|
|
Mai 2003
|
|
Mehefin 2003
|
|
Gorffennaf 2003
|
|
Awst 2003
|
|
Medi 2003
|
|
Hydref 2003
|
|
Tachwedd 2003
|
|
Rhagfyr 2003
|
|
Ionawr 2004
|
|
Chwefror 2004
|
|
Mawrth 2004
|
|
Ebrill 2004
|
|
Mai 2004
|
|
Mehefin 2004
|
|
Gorffennaf 2004
|
|
Awst 2004
|
|
Medi 2004
|
|
Hydref 2004
|
|
Tachwedd 2004
|
|
Rhagfyr 2004
|
|
Ionawr 2005
|
|
Chwefror 2005
|
|
Mawrth 2005
|
|
Ebrill 2005
|
|
Mai 2005
|
|
Mehefin 2005
|
|
Gorffennaf 2005
|
|
Awst 2005
|
|
Medi 2005
|
|
Hydref 2005
|
|
Tachwedd 2005
|
|
Rhagfyr 2005
|
|
Ionawr 2006
|
|
Chwefror 2006
|
|
Mawrth 2006
|
|
Ebrill 2006
|
|
Mai 2006
|
|
Mehefin 2006
|
|
Gorffennaf 2006
|
|
Awst 2006
|
|
Medi 2006
|
|
Hydref 2006
|
|
Tachwedd 2006
|
|
Rhagfyr 2006
|
|
Ionawr 2007
|
|
Chwefror 2007
|
|
Mawrth 2007
|
|
Ebrill 2007
|
|
Mai 2007
|
|
Mehefin 2007
|
|
Gorffennaf 2007
|
|
Awst 2007
|
|
Medi 2007
|
|
Hydref 2007
|
|
Tachwedd 2007
|
|
Rhagfyr 2007
|
|
Ionawr 2008
|
|
Chwefror 2008
|
|
Mawrth 2008
|
|
Ebrill 2008
|
|
Mai 2008
|
|
Mehefin 2008
|
|
Gorffennaf 2008
|
|
Awst 2008
|
|
Medi 2008
|
|
Hydref 2008
|
|
Tachwedd 2008
|
|
Rhagfyr 2008
|
|
Ionawr 2009
|
|
Chwefror 2009
|
|
Mawrth 2009
|
|
Ebrill 2009
|
|
Mai 2009
|
|
Mehefin 2009
|
|
Gorffennaf 2009
|
|
Awst 2009
|
|
Medi 2009
|
|
Hydref 2009
|
|
Tachwedd 2009
|
|
Rhagfyr 2009
|
|
Ionawr 2010
|
|
Chwefror 2010
|
|
Mawrth 2010
|
|
Ebrill 2010
|
|
Mai 2010
|
|
Mehefin 2010
|
|
Gorffennaf 2010
|
|
Awst 2010
|
|
Medi 2010
|
|
Hydref 2010
|
|
Tachwedd 2010
|
|
Rhagfyr 2010
|
|
Ionawr 2011
|
|
Chwefror 2011
|
|
Mawrth 2011
|
|
Ebrill 2011
|
|
Mai 2011
|
|
Mehefin 2011
|
|
Gorffennaf 2011
|
|
Awst 2011
|
|
Medi 2011
|
|
Hydref 2011
|
|
Tachwedd 2011
|
|
Rhagfyr 2011
|
|
Ionawr 2012
|
|
Chwefror 2012
|
-0.4
|
Mawrth 2012
|
-1.0
|
Ebrill 2012
|
2.8
|
Mai 2012
|
1.8
|
Mehefin 2012
|
0.8
|
Gorffennaf 2012
|
0.7
|
Awst 2012
|
0.4
|
Medi 2012
|
-0.5
|
Hydref 2012
|
0.5
|
Tachwedd 2012
|
-0.5
|
Rhagfyr 2012
|
1.6
|
Ionawr 2013
|
-0.8
|
Chwefror 2013
|
0.7
|
Mawrth 2013
|
-0.5
|
Ebrill 2013
|
2.7
|
Mai 2013
|
0.4
|
Mehefin 2013
|
0.7
|
Gorffennaf 2013
|
2.6
|
Awst 2013
|
0.9
|
Medi 2013
|
1.3
|
Hydref 2013
|
-0.0
|
Tachwedd 2013
|
1.1
|
Rhagfyr 2013
|
2.3
|
Ionawr 2014
|
1.1
|
Chwefror 2014
|
0.5
|
Mawrth 2014
|
1.0
|
Ebrill 2014
|
3.9
|
Mai 2014
|
2.0
|
Mehefin 2014
|
1.1
|
Gorffennaf 2014
|
3.0
|
Awst 2014
|
1.6
|
Medi 2014
|
-0.3
|
Hydref 2014
|
-0.3
|
Tachwedd 2014
|
-0.4
|
Rhagfyr 2014
|
0.6
|
Ionawr 2015
|
-0.1
|
Chwefror 2015
|
0.5
|
Mawrth 2015
|
0.1
|
Ebrill 2015
|
1.4
|
Mai 2015
|
1.3
|
Mehefin 2015
|
1.0
|
Gorffennaf 2015
|
2.9
|
Awst 2015
|
1.2
|
Medi 2015
|
0.6
|
Hydref 2015
|
0.4
|
Tachwedd 2015
|
1.0
|
Rhagfyr 2015
|
1.1
|
Ionawr 2016
|
1.6
|
Chwefror 2016
|
0.2
|
Mawrth 2016
|
1.4
|
Ebrill 2016
|
-0.8
|
Mai 2016
|
1.4
|
Mehefin 2016
|
0.1
|
Gorffennaf 2016
|
1.7
|
Awst 2016
|
-0.7
|
Medi 2016
|
-0.2
|
Hydref 2016
|
-0.1
|
Tachwedd 2016
|
-0.2
|
Rhagfyr 2016
|
0.3
|
Ionawr 2017
|
0.8
|
Chwefror 2017
|
0.1
|
Mawrth 2017
|
-0.2
|
Ebrill 2017
|
0.8
|
Mai 2017
|
0.4
|
Mehefin 2017
|
0.0
|
Gorffennaf 2017
|
1.7
|
Awst 2017
|
-0.2
|
Medi 2017
|
-0.6
|
Hydref 2017
|
-0.6
|
Tachwedd 2017
|
-1.2
|
Rhagfyr 2017
|
0.2
|
Ionawr 2018
|
0.5
|
Chwefror 2018
|
-0.2
|
Mawrth 2018
|
-1.1
|
Ebrill 2018
|
1.1
|
Mai 2018
|
0.5
|
Mehefin 2018
|
0.2
|
Gorffennaf 2018
|
1.0
|
Awst 2018
|
-1.1
|
Medi 2018
|
-0.6
|
Hydref 2018
|
0.8
|
Tachwedd 2018
|
-1.3
|
Rhagfyr 2018
|
-0.2
|
Ionawr 2019
|
-0.6
|
Chwefror 2019
|
-0.9
|
Mawrth 2019
|
-0.4
|
Ebrill 2019
|
1.0
|
Mai 2019
|
-1.2
|
Mehefin 2019
|
1.5
|
Gorffennaf 2019
|
1.7
|
Awst 2019
|
-1.0
|
Medi 2019
|
0.8
|
Hydref 2019
|
-0.8
|
Tachwedd 2019
|
-0.8
|
Rhagfyr 2019
|
2.1
|
Ionawr 2020
|
-0.7
|
Chwefror 2020
|
-0.2
|
Mawrth 2020
|
1.6
|
Ebrill 2020
|
-1.4
|
Mai 2020
|
-0.4
|
Mehefin 2020
|
1.4
|
Gorffennaf 2020
|
0.8
|
Awst 2020
|
1.2
|
Medi 2020
|
0.8
|
Hydref 2020
|
-1.2
|
Tachwedd 2020
|
1.6
|
Rhagfyr 2020
|
-0.0
|
Ionawr 2021
|
0.0
|
Chwefror 2021
|
-0.8
|
Mawrth 2021
|
1.7
|
Ebrill 2021
|
-1.9
|
Mai 2021
|
-0.2
|
Mehefin 2021
|
3.1
|
Gorffennaf 2021
|
-2.4
|
Dyddiad
|
Pryniannau morgais
|
Ionawr 1980
|
|
Chwefror 1980
|
|
Mawrth 1980
|
|
Ebrill 1980
|
|
Mai 1980
|
|
Mehefin 1980
|
|
Gorffennaf 1980
|
|
Awst 1980
|
|
Medi 1980
|
|
Hydref 1980
|
|
Tachwedd 1980
|
|
Rhagfyr 1980
|
|
Ionawr 1981
|
|
Chwefror 1981
|
|
Mawrth 1981
|
|
Ebrill 1981
|
|
Mai 1981
|
|
Mehefin 1981
|
|
Gorffennaf 1981
|
|
Awst 1981
|
|
Medi 1981
|
|
Hydref 1981
|
|
Tachwedd 1981
|
|
Rhagfyr 1981
|
|
Ionawr 1982
|
|
Chwefror 1982
|
|
Mawrth 1982
|
|
Ebrill 1982
|
|
Mai 1982
|
|
Mehefin 1982
|
|
Gorffennaf 1982
|
|
Awst 1982
|
|
Medi 1982
|
|
Hydref 1982
|
|
Tachwedd 1982
|
|
Rhagfyr 1982
|
|
Ionawr 1983
|
|
Chwefror 1983
|
|
Mawrth 1983
|
|
Ebrill 1983
|
|
Mai 1983
|
|
Mehefin 1983
|
|
Gorffennaf 1983
|
|
Awst 1983
|
|
Medi 1983
|
|
Hydref 1983
|
|
Tachwedd 1983
|
|
Rhagfyr 1983
|
|
Ionawr 1984
|
|
Chwefror 1984
|
|
Mawrth 1984
|
|
Ebrill 1984
|
|
Mai 1984
|
|
Mehefin 1984
|
|
Gorffennaf 1984
|
|
Awst 1984
|
|
Medi 1984
|
|
Hydref 1984
|
|
Tachwedd 1984
|
|
Rhagfyr 1984
|
|
Ionawr 1985
|
|
Chwefror 1985
|
|
Mawrth 1985
|
|
Ebrill 1985
|
|
Mai 1985
|
|
Mehefin 1985
|
|
Gorffennaf 1985
|
|
Awst 1985
|
|
Medi 1985
|
|
Hydref 1985
|
|
Tachwedd 1985
|
|
Rhagfyr 1985
|
|
Ionawr 1986
|
|
Chwefror 1986
|
|
Mawrth 1986
|
|
Ebrill 1986
|
|
Mai 1986
|
|
Mehefin 1986
|
|
Gorffennaf 1986
|
|
Awst 1986
|
|
Medi 1986
|
|
Hydref 1986
|
|
Tachwedd 1986
|
|
Rhagfyr 1986
|
|
Ionawr 1987
|
|
Chwefror 1987
|
|
Mawrth 1987
|
|
Ebrill 1987
|
|
Mai 1987
|
|
Mehefin 1987
|
|
Gorffennaf 1987
|
|
Awst 1987
|
|
Medi 1987
|
|
Hydref 1987
|
|
Tachwedd 1987
|
|
Rhagfyr 1987
|
|
Ionawr 1988
|
|
Chwefror 1988
|
|
Mawrth 1988
|
|
Ebrill 1988
|
|
Mai 1988
|
|
Mehefin 1988
|
|
Gorffennaf 1988
|
|
Awst 1988
|
|
Medi 1988
|
|
Hydref 1988
|
|
Tachwedd 1988
|
|
Rhagfyr 1988
|
|
Ionawr 1989
|
|
Chwefror 1989
|
|
Mawrth 1989
|
|
Ebrill 1989
|
|
Mai 1989
|
|
Mehefin 1989
|
|
Gorffennaf 1989
|
|
Awst 1989
|
|
Medi 1989
|
|
Hydref 1989
|
|
Tachwedd 1989
|
|
Rhagfyr 1989
|
|
Ionawr 1990
|
|
Chwefror 1990
|
|
Mawrth 1990
|
|
Ebrill 1990
|
|
Mai 1990
|
|
Mehefin 1990
|
|
Gorffennaf 1990
|
|
Awst 1990
|
|
Medi 1990
|
|
Hydref 1990
|
|
Tachwedd 1990
|
|
Rhagfyr 1990
|
|
Ionawr 1991
|
|
Chwefror 1991
|
|
Mawrth 1991
|
|
Ebrill 1991
|
|
Mai 1991
|
|
Mehefin 1991
|
|
Gorffennaf 1991
|
|
Awst 1991
|
|
Medi 1991
|
|
Hydref 1991
|
|
Tachwedd 1991
|
|
Rhagfyr 1991
|
|
Ionawr 1992
|
|
Chwefror 1992
|
|
Mawrth 1992
|
|
Ebrill 1992
|
|
Mai 1992
|
|
Mehefin 1992
|
|
Gorffennaf 1992
|
|
Awst 1992
|
|
Medi 1992
|
|
Hydref 1992
|
|
Tachwedd 1992
|
|
Rhagfyr 1992
|
|
Ionawr 1993
|
|
Chwefror 1993
|
|
Mawrth 1993
|
|
Ebrill 1993
|
|
Mai 1993
|
|
Mehefin 1993
|
|
Gorffennaf 1993
|
|
Awst 1993
|
|
Medi 1993
|
|
Hydref 1993
|
|
Tachwedd 1993
|
|
Rhagfyr 1993
|
|
Ionawr 1994
|
|
Chwefror 1994
|
|
Mawrth 1994
|
|
Ebrill 1994
|
|
Mai 1994
|
|
Mehefin 1994
|
|
Gorffennaf 1994
|
|
Awst 1994
|
|
Medi 1994
|
|
Hydref 1994
|
|
Tachwedd 1994
|
|
Rhagfyr 1994
|
|
Ionawr 1995
|
|
Chwefror 1995
|
|
Mawrth 1995
|
|
Ebrill 1995
|
|
Mai 1995
|
|
Mehefin 1995
|
|
Gorffennaf 1995
|
|
Awst 1995
|
|
Medi 1995
|
|
Hydref 1995
|
|
Tachwedd 1995
|
|
Rhagfyr 1995
|
|
Ionawr 1996
|
|
Chwefror 1996
|
|
Mawrth 1996
|
|
Ebrill 1996
|
|
Mai 1996
|
|
Mehefin 1996
|
|
Gorffennaf 1996
|
|
Awst 1996
|
|
Medi 1996
|
|
Hydref 1996
|
|
Tachwedd 1996
|
|
Rhagfyr 1996
|
|
Ionawr 1997
|
|
Chwefror 1997
|
|
Mawrth 1997
|
|
Ebrill 1997
|
|
Mai 1997
|
|
Mehefin 1997
|
|
Gorffennaf 1997
|
|
Awst 1997
|
|
Medi 1997
|
|
Hydref 1997
|
|
Tachwedd 1997
|
|
Rhagfyr 1997
|
|
Ionawr 1998
|
|
Chwefror 1998
|
|
Mawrth 1998
|
|
Ebrill 1998
|
|
Mai 1998
|
|
Mehefin 1998
|
|
Gorffennaf 1998
|
|
Awst 1998
|
|
Medi 1998
|
|
Hydref 1998
|
|
Tachwedd 1998
|
|
Rhagfyr 1998
|
|
Ionawr 1999
|
|
Chwefror 1999
|
|
Mawrth 1999
|
|
Ebrill 1999
|
|
Mai 1999
|
|
Mehefin 1999
|
|
Gorffennaf 1999
|
|
Awst 1999
|
|
Medi 1999
|
|
Hydref 1999
|
|
Tachwedd 1999
|
|
Rhagfyr 1999
|
|
Ionawr 2000
|
|
Chwefror 2000
|
|
Mawrth 2000
|
|
Ebrill 2000
|
|
Mai 2000
|
|
Mehefin 2000
|
|
Gorffennaf 2000
|
|
Awst 2000
|
|
Medi 2000
|
|
Hydref 2000
|
|
Tachwedd 2000
|
|
Rhagfyr 2000
|
|
Ionawr 2001
|
|
Chwefror 2001
|
|
Mawrth 2001
|
|
Ebrill 2001
|
|
Mai 2001
|
|
Mehefin 2001
|
|
Gorffennaf 2001
|
|
Awst 2001
|
|
Medi 2001
|
|
Hydref 2001
|
|
Tachwedd 2001
|
|
Rhagfyr 2001
|
|
Ionawr 2002
|
|
Chwefror 2002
|
|
Mawrth 2002
|
|
Ebrill 2002
|
|
Mai 2002
|
|
Mehefin 2002
|
|
Gorffennaf 2002
|
|
Awst 2002
|
|
Medi 2002
|
|
Hydref 2002
|
|
Tachwedd 2002
|
|
Rhagfyr 2002
|
|
Ionawr 2003
|
|
Chwefror 2003
|
|
Mawrth 2003
|
|
Ebrill 2003
|
|
Mai 2003
|
|
Mehefin 2003
|
|
Gorffennaf 2003
|
|
Awst 2003
|
|
Medi 2003
|
|
Hydref 2003
|
|
Tachwedd 2003
|
|
Rhagfyr 2003
|
|
Ionawr 2004
|
|
Chwefror 2004
|
|
Mawrth 2004
|
|
Ebrill 2004
|
|
Mai 2004
|
|
Mehefin 2004
|
|
Gorffennaf 2004
|
|
Awst 2004
|
|
Medi 2004
|
|
Hydref 2004
|
|
Tachwedd 2004
|
|
Rhagfyr 2004
|
|
Ionawr 2005
|
|
Chwefror 2005
|
|
Mawrth 2005
|
|
Ebrill 2005
|
|
Mai 2005
|
|
Mehefin 2005
|
|
Gorffennaf 2005
|
|
Awst 2005
|
|
Medi 2005
|
|
Hydref 2005
|
|
Tachwedd 2005
|
|
Rhagfyr 2005
|
|
Ionawr 2006
|
|
Chwefror 2006
|
|
Mawrth 2006
|
|
Ebrill 2006
|
|
Mai 2006
|
|
Mehefin 2006
|
|
Gorffennaf 2006
|
|
Awst 2006
|
|
Medi 2006
|
|
Hydref 2006
|
|
Tachwedd 2006
|
|
Rhagfyr 2006
|
|
Ionawr 2007
|
|
Chwefror 2007
|
|
Mawrth 2007
|
|
Ebrill 2007
|
|
Mai 2007
|
|
Mehefin 2007
|
|
Gorffennaf 2007
|
|
Awst 2007
|
|
Medi 2007
|
|
Hydref 2007
|
|
Tachwedd 2007
|
|
Rhagfyr 2007
|
|
Ionawr 2008
|
|
Chwefror 2008
|
|
Mawrth 2008
|
|
Ebrill 2008
|
|
Mai 2008
|
|
Mehefin 2008
|
|
Gorffennaf 2008
|
|
Awst 2008
|
|
Medi 2008
|
|
Hydref 2008
|
|
Tachwedd 2008
|
|
Rhagfyr 2008
|
|
Ionawr 2009
|
|
Chwefror 2009
|
|
Mawrth 2009
|
|
Ebrill 2009
|
|
Mai 2009
|
|
Mehefin 2009
|
|
Gorffennaf 2009
|
|
Awst 2009
|
|
Medi 2009
|
|
Hydref 2009
|
|
Tachwedd 2009
|
|
Rhagfyr 2009
|
|
Ionawr 2010
|
|
Chwefror 2010
|
|
Mawrth 2010
|
|
Ebrill 2010
|
|
Mai 2010
|
|
Mehefin 2010
|
|
Gorffennaf 2010
|
|
Awst 2010
|
|
Medi 2010
|
|
Hydref 2010
|
|
Tachwedd 2010
|
|
Rhagfyr 2010
|
|
Ionawr 2011
|
|
Chwefror 2011
|
|
Mawrth 2011
|
|
Ebrill 2011
|
|
Mai 2011
|
|
Mehefin 2011
|
|
Gorffennaf 2011
|
|
Awst 2011
|
|
Medi 2011
|
|
Hydref 2011
|
|
Tachwedd 2011
|
|
Rhagfyr 2011
|
|
Ionawr 2012
|
73.2
|
Chwefror 2012
|
72.9
|
Mawrth 2012
|
72.2
|
Ebrill 2012
|
74.2
|
Mai 2012
|
75.6
|
Mehefin 2012
|
76.1
|
Gorffennaf 2012
|
76.7
|
Awst 2012
|
77.0
|
Medi 2012
|
76.6
|
Hydref 2012
|
77.0
|
Tachwedd 2012
|
76.6
|
Rhagfyr 2012
|
77.9
|
Ionawr 2013
|
77.2
|
Chwefror 2013
|
77.8
|
Mawrth 2013
|
77.4
|
Ebrill 2013
|
79.6
|
Mai 2013
|
79.9
|
Mehefin 2013
|
80.5
|
Gorffennaf 2013
|
82.6
|
Awst 2013
|
83.3
|
Medi 2013
|
84.4
|
Hydref 2013
|
84.4
|
Tachwedd 2013
|
85.3
|
Rhagfyr 2013
|
87.3
|
Ionawr 2014
|
88.3
|
Chwefror 2014
|
88.7
|
Mawrth 2014
|
89.6
|
Ebrill 2014
|
93.2
|
Mai 2014
|
95.0
|
Mehefin 2014
|
96.0
|
Gorffennaf 2014
|
99.0
|
Awst 2014
|
100.6
|
Medi 2014
|
100.2
|
Hydref 2014
|
99.9
|
Tachwedd 2014
|
99.5
|
Rhagfyr 2014
|
100.1
|
Ionawr 2015
|
100.0
|
Chwefror 2015
|
100.5
|
Mawrth 2015
|
100.6
|
Ebrill 2015
|
102.0
|
Mai 2015
|
103.3
|
Mehefin 2015
|
104.3
|
Gorffennaf 2015
|
107.3
|
Awst 2015
|
108.6
|
Medi 2015
|
109.3
|
Hydref 2015
|
109.8
|
Tachwedd 2015
|
110.8
|
Rhagfyr 2015
|
112.0
|
Ionawr 2016
|
113.9
|
Chwefror 2016
|
114.2
|
Mawrth 2016
|
115.7
|
Ebrill 2016
|
114.9
|
Mai 2016
|
116.5
|
Mehefin 2016
|
116.7
|
Gorffennaf 2016
|
118.6
|
Awst 2016
|
117.9
|
Medi 2016
|
117.6
|
Hydref 2016
|
117.5
|
Tachwedd 2016
|
117.2
|
Rhagfyr 2016
|
117.6
|
Ionawr 2017
|
118.4
|
Chwefror 2017
|
118.6
|
Mawrth 2017
|
118.4
|
Ebrill 2017
|
119.3
|
Mai 2017
|
119.7
|
Mehefin 2017
|
119.7
|
Gorffennaf 2017
|
121.7
|
Awst 2017
|
121.4
|
Medi 2017
|
120.7
|
Hydref 2017
|
120.0
|
Tachwedd 2017
|
118.6
|
Rhagfyr 2017
|
118.8
|
Ionawr 2018
|
119.4
|
Chwefror 2018
|
119.0
|
Mawrth 2018
|
117.7
|
Ebrill 2018
|
119.0
|
Mai 2018
|
119.6
|
Mehefin 2018
|
119.8
|
Gorffennaf 2018
|
120.9
|
Awst 2018
|
119.6
|
Medi 2018
|
118.9
|
Hydref 2018
|
119.8
|
Tachwedd 2018
|
118.3
|
Rhagfyr 2018
|
118.1
|
Ionawr 2019
|
117.4
|
Chwefror 2019
|
116.4
|
Mawrth 2019
|
115.9
|
Ebrill 2019
|
117.1
|
Mai 2019
|
115.7
|
Mehefin 2019
|
117.5
|
Gorffennaf 2019
|
119.5
|
Awst 2019
|
118.3
|
Medi 2019
|
119.2
|
Hydref 2019
|
118.2
|
Tachwedd 2019
|
117.2
|
Rhagfyr 2019
|
119.6
|
Ionawr 2020
|
118.8
|
Chwefror 2020
|
118.5
|
Mawrth 2020
|
120.4
|
Ebrill 2020
|
118.8
|
Mai 2020
|
118.3
|
Mehefin 2020
|
119.9
|
Gorffennaf 2020
|
120.8
|
Awst 2020
|
122.4
|
Medi 2020
|
123.4
|
Hydref 2020
|
121.8
|
Tachwedd 2020
|
123.8
|
Rhagfyr 2020
|
123.8
|
Ionawr 2021
|
123.8
|
Chwefror 2021
|
122.8
|
Mawrth 2021
|
124.9
|
Ebrill 2021
|
122.5
|
Mai 2021
|
122.2
|
Mehefin 2021
|
126.1
|
Gorffennaf 2021
|
123.0
|
Statws yr eiddo
Tracio’r mynegai, pris cyfartalog a’r newid misol a blynyddol a nifer y gwerthiannau yn ôl cyllido yn ôl statws yr eiddo, e.e. Newydd/Presennol