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
|
Fflatiau a fflatiau deulawr
|
Ebrill 1998
|
69757.0
|
|
|
|
|
Mai 1998
|
69757.0
|
|
|
|
|
Mehefin 1998
|
69757.0
|
|
|
|
|
Gorffennaf 1998
|
72795.0
|
|
|
|
|
Awst 1998
|
72795.0
|
|
|
|
|
Medi 1998
|
72795.0
|
|
|
|
|
Hydref 1998
|
72469.0
|
|
|
|
|
Tachwedd 1998
|
72469.0
|
|
|
|
|
Rhagfyr 1998
|
72469.0
|
|
|
|
|
Ionawr 1999
|
72903.0
|
|
|
|
|
Chwefror 1999
|
72903.0
|
|
|
|
|
Mawrth 1999
|
72903.0
|
|
|
|
|
Ebrill 1999
|
75995.0
|
|
|
|
|
Mai 1999
|
75995.0
|
|
|
|
|
Mehefin 1999
|
75995.0
|
|
|
|
|
Gorffennaf 1999
|
80443.0
|
|
|
|
|
Awst 1999
|
80443.0
|
|
|
|
|
Medi 1999
|
80443.0
|
|
|
|
|
Hydref 1999
|
82504.0
|
|
|
|
|
Tachwedd 1999
|
82504.0
|
|
|
|
|
Rhagfyr 1999
|
82504.0
|
|
|
|
|
Ionawr 2000
|
84620.0
|
|
|
|
|
Chwefror 2000
|
84620.0
|
|
|
|
|
Mawrth 2000
|
84620.0
|
|
|
|
|
Ebrill 2000
|
89230.0
|
|
|
|
|
Mai 2000
|
89230.0
|
|
|
|
|
Mehefin 2000
|
89230.0
|
|
|
|
|
Gorffennaf 2000
|
90912.0
|
|
|
|
|
Awst 2000
|
90912.0
|
|
|
|
|
Medi 2000
|
90912.0
|
|
|
|
|
Hydref 2000
|
93624.0
|
|
|
|
|
Tachwedd 2000
|
93624.0
|
|
|
|
|
Rhagfyr 2000
|
93624.0
|
|
|
|
|
Ionawr 2001
|
93136.0
|
|
|
|
|
Chwefror 2001
|
93136.0
|
|
|
|
|
Mawrth 2001
|
93136.0
|
|
|
|
|
Ebrill 2001
|
96499.0
|
|
|
|
|
Mai 2001
|
96499.0
|
|
|
|
|
Mehefin 2001
|
96499.0
|
|
|
|
|
Gorffennaf 2001
|
99971.0
|
|
|
|
|
Awst 2001
|
99971.0
|
|
|
|
|
Medi 2001
|
99971.0
|
|
|
|
|
Hydref 2001
|
97964.0
|
|
|
|
|
Tachwedd 2001
|
97964.0
|
|
|
|
|
Rhagfyr 2001
|
97964.0
|
|
|
|
|
Ionawr 2002
|
97623.0
|
|
|
|
|
Chwefror 2002
|
101164.0
|
|
|
|
|
Mawrth 2002
|
104705.0
|
|
|
|
|
Ebrill 2002
|
106121.0
|
|
|
|
|
Mai 2002
|
108852.0
|
|
|
|
|
Mehefin 2002
|
113304.0
|
|
|
|
|
Gorffennaf 2002
|
114214.0
|
|
|
|
|
Awst 2002
|
116743.0
|
|
|
|
|
Medi 2002
|
119576.0
|
|
|
|
|
Hydref 2002
|
120486.0
|
|
|
|
|
Tachwedd 2002
|
121700.0
|
|
|
|
|
Rhagfyr 2002
|
125747.0
|
|
|
|
|
Ionawr 2003
|
124836.0
|
|
|
|
|
Chwefror 2003
|
123521.0
|
|
|
|
|
Mawrth 2003
|
126152.0
|
|
|
|
|
Ebrill 2003
|
129186.0
|
|
|
|
|
Mai 2003
|
128276.0
|
|
|
|
|
Mehefin 2003
|
128579.0
|
|
|
|
|
Gorffennaf 2003
|
130805.0
|
|
|
|
|
Awst 2003
|
133132.0
|
|
|
|
|
Medi 2003
|
132727.0
|
|
|
|
|
Hydref 2003
|
135054.0
|
|
|
|
|
Tachwedd 2003
|
133536.0
|
|
|
|
|
Rhagfyr 2003
|
136167.0
|
|
|
|
|
Ionawr 2004
|
136976.0
|
|
|
|
|
Chwefror 2004
|
135661.0
|
|
|
|
|
Mawrth 2004
|
135964.0
|
|
|
|
|
Ebrill 2004
|
142135.0
|
|
|
|
|
Mai 2004
|
143855.0
|
|
|
|
|
Mehefin 2004
|
146384.0
|
|
|
|
|
Gorffennaf 2004
|
149520.0
|
|
|
|
|
Awst 2004
|
151240.0
|
|
|
|
|
Medi 2004
|
150937.0
|
|
|
|
|
Hydref 2004
|
152050.0
|
|
|
|
|
Tachwedd 2004
|
151847.0
|
|
|
|
|
Rhagfyr 2004
|
150734.0
|
|
|
|
|
Ionawr 2005
|
150633.0
|
236191.0
|
145913.0
|
119750.0
|
127018.0
|
Chwefror 2005
|
150488.0
|
234509.0
|
146578.0
|
119434.0
|
127046.0
|
Mawrth 2005
|
151723.0
|
235038.0
|
147324.0
|
120943.0
|
128372.0
|
Ebrill 2005
|
153880.0
|
236330.0
|
149615.0
|
122906.0
|
130545.0
|
Mai 2005
|
155533.0
|
240601.0
|
150580.0
|
124215.0
|
131826.0
|
Mehefin 2005
|
156767.0
|
239089.0
|
151657.0
|
126133.0
|
133124.0
|
Gorffennaf 2005
|
158786.0
|
244141.0
|
154293.0
|
127393.0
|
133758.0
|
Awst 2005
|
159431.0
|
246629.0
|
153880.0
|
128019.0
|
134530.0
|
Medi 2005
|
159183.0
|
244951.0
|
153647.0
|
128512.0
|
133820.0
|
Hydref 2005
|
158865.0
|
244596.0
|
153722.0
|
127976.0
|
133529.0
|
Tachwedd 2005
|
159337.0
|
244936.0
|
154068.0
|
128414.0
|
134133.0
|
Rhagfyr 2005
|
160209.0
|
242343.0
|
153914.0
|
129718.0
|
136871.0
|
Ionawr 2006
|
159970.0
|
244844.0
|
154122.0
|
129002.0
|
135909.0
|
Chwefror 2006
|
160231.0
|
243243.0
|
154159.0
|
129318.0
|
137211.0
|
Mawrth 2006
|
161531.0
|
245956.0
|
155563.0
|
130386.0
|
137740.0
|
Ebrill 2006
|
165042.0
|
249485.0
|
159151.0
|
133945.0
|
140314.0
|
Mai 2006
|
166606.0
|
252502.0
|
160241.0
|
134568.0
|
142780.0
|
Mehefin 2006
|
168184.0
|
252748.0
|
161638.0
|
136637.0
|
144114.0
|
Gorffennaf 2006
|
170604.0
|
258352.0
|
163934.0
|
139157.0
|
144386.0
|
Awst 2006
|
172037.0
|
261682.0
|
165273.0
|
139870.0
|
145759.0
|
Medi 2006
|
172738.0
|
262324.0
|
165909.0
|
140269.0
|
146869.0
|
Hydref 2006
|
173750.0
|
263693.0
|
166832.0
|
141278.0
|
147609.0
|
Tachwedd 2006
|
174644.0
|
265290.0
|
168046.0
|
142103.0
|
147708.0
|
Rhagfyr 2006
|
176819.0
|
264999.0
|
169329.0
|
144505.0
|
151264.0
|
Ionawr 2007
|
176758.0
|
268186.0
|
169496.0
|
144185.0
|
150639.0
|
Chwefror 2007
|
177261.0
|
267642.0
|
169788.0
|
144010.0
|
152704.0
|
Mawrth 2007
|
178636.0
|
269178.0
|
170921.0
|
146113.0
|
152908.0
|
Ebrill 2007
|
182243.0
|
273582.0
|
174013.0
|
149342.0
|
156410.0
|
Mai 2007
|
184330.0
|
275810.0
|
175564.0
|
150441.0
|
159937.0
|
Mehefin 2007
|
186348.0
|
279156.0
|
177260.0
|
152369.0
|
161353.0
|
Gorffennaf 2007
|
188691.0
|
285684.0
|
179325.0
|
153994.0
|
162554.0
|
Awst 2007
|
189786.0
|
287929.0
|
180401.0
|
155100.0
|
162878.0
|
Medi 2007
|
190032.0
|
288381.0
|
180270.0
|
154741.0
|
164251.0
|
Hydref 2007
|
189589.0
|
288223.0
|
179621.0
|
154398.0
|
163837.0
|
Tachwedd 2007
|
189489.0
|
288470.0
|
179951.0
|
153793.0
|
163900.0
|
Rhagfyr 2007
|
189193.0
|
285242.0
|
179364.0
|
154082.0
|
164472.0
|
Ionawr 2008
|
185782.0
|
280201.0
|
175565.0
|
150959.0
|
164580.0
|
Chwefror 2008
|
184185.0
|
277037.0
|
174660.0
|
149627.0
|
162953.0
|
Mawrth 2008
|
182845.0
|
273984.0
|
173965.0
|
149155.0
|
160801.0
|
Ebrill 2008
|
183148.0
|
275418.0
|
173450.0
|
149733.0
|
160963.0
|
Mai 2008
|
184267.0
|
275513.0
|
175160.0
|
150198.0
|
162696.0
|
Mehefin 2008
|
181831.0
|
271990.0
|
172913.0
|
148590.0
|
159875.0
|
Gorffennaf 2008
|
179845.0
|
270883.0
|
170845.0
|
146400.0
|
158188.0
|
Awst 2008
|
176092.0
|
266384.0
|
167166.0
|
143180.0
|
154671.0
|
Medi 2008
|
171660.0
|
262199.0
|
162201.0
|
139195.0
|
150878.0
|
Hydref 2008
|
168177.0
|
255567.0
|
159515.0
|
136263.0
|
147979.0
|
Tachwedd 2008
|
163447.0
|
247586.0
|
155709.0
|
132512.0
|
143378.0
|
Rhagfyr 2008
|
160954.0
|
242938.0
|
152977.0
|
131693.0
|
140291.0
|
Ionawr 2009
|
157234.0
|
241206.0
|
148741.0
|
126924.0
|
137752.0
|
Chwefror 2009
|
155417.0
|
235417.0
|
147888.0
|
125694.0
|
136740.0
|
Mawrth 2009
|
154452.0
|
234530.0
|
146108.0
|
125065.0
|
136442.0
|
Ebrill 2009
|
155852.0
|
235300.0
|
148495.0
|
126884.0
|
136051.0
|
Mai 2009
|
158004.0
|
238699.0
|
150402.0
|
128432.0
|
138356.0
|
Mehefin 2009
|
159561.0
|
241957.0
|
151480.0
|
130003.0
|
139122.0
|
Gorffennaf 2009
|
162423.0
|
246960.0
|
154547.0
|
132514.0
|
140355.0
|
Awst 2009
|
164025.0
|
249979.0
|
156307.0
|
133758.0
|
141096.0
|
Medi 2009
|
165314.0
|
251604.0
|
156912.0
|
134809.0
|
143313.0
|
Hydref 2009
|
166425.0
|
253836.0
|
158867.0
|
135658.0
|
142741.0
|
Tachwedd 2009
|
166986.0
|
255675.0
|
158605.0
|
136505.0
|
142999.0
|
Rhagfyr 2009
|
168082.0
|
252946.0
|
160655.0
|
138433.0
|
144066.0
|
Ionawr 2010
|
167469.0
|
258979.0
|
159457.0
|
136261.0
|
142338.0
|
Chwefror 2010
|
167888.0
|
258258.0
|
160617.0
|
136752.0
|
142407.0
|
Mawrth 2010
|
167878.0
|
258191.0
|
159678.0
|
136425.0
|
144189.0
|
Ebrill 2010
|
170028.0
|
260075.0
|
162470.0
|
138535.0
|
145456.0
|
Mai 2010
|
170846.0
|
262619.0
|
162702.0
|
139143.0
|
146061.0
|
Mehefin 2010
|
171689.0
|
262311.0
|
163595.0
|
140462.0
|
146799.0
|
Gorffennaf 2010
|
173427.0
|
268336.0
|
165086.0
|
141211.0
|
147180.0
|
Awst 2010
|
173417.0
|
268707.0
|
166058.0
|
140523.0
|
146679.0
|
Medi 2010
|
172972.0
|
268248.0
|
164443.0
|
140678.0
|
146900.0
|
Hydref 2010
|
171045.0
|
265285.0
|
163224.0
|
138675.0
|
145117.0
|
Tachwedd 2010
|
169013.0
|
263487.0
|
161335.0
|
136245.0
|
143631.0
|
Rhagfyr 2010
|
168703.0
|
260339.0
|
160988.0
|
136909.0
|
143845.0
|
Ionawr 2011
|
167300.0
|
260855.0
|
158765.0
|
134970.0
|
143346.0
|
Chwefror 2011
|
166415.0
|
259042.0
|
157919.0
|
134337.0
|
142769.0
|
Mawrth 2011
|
165649.0
|
258129.0
|
156617.0
|
133724.0
|
142713.0
|
Ebrill 2011
|
168218.0
|
259704.0
|
159154.0
|
136375.0
|
145543.0
|
Mai 2011
|
167470.0
|
257725.0
|
159241.0
|
135373.0
|
145040.0
|
Mehefin 2011
|
167753.0
|
257002.0
|
159732.0
|
136039.0
|
145077.0
|
Gorffennaf 2011
|
169866.0
|
261398.0
|
160876.0
|
137528.0
|
147675.0
|
Awst 2011
|
169968.0
|
263565.0
|
162048.0
|
137455.0
|
145046.0
|
Medi 2011
|
169544.0
|
263033.0
|
160864.0
|
137333.0
|
145316.0
|
Hydref 2011
|
167673.0
|
261050.0
|
159782.0
|
135106.0
|
143274.0
|
Tachwedd 2011
|
167757.0
|
259857.0
|
159722.0
|
134893.0
|
144974.0
|
Rhagfyr 2011
|
167048.0
|
256911.0
|
159321.0
|
135042.0
|
144095.0
|
Ionawr 2012
|
165908.0
|
256484.0
|
158399.0
|
133953.0
|
142151.0
|
Chwefror 2012
|
165457.0
|
255828.0
|
157793.0
|
134143.0
|
141034.0
|
Mawrth 2012
|
165947.0
|
252632.0
|
158344.0
|
135297.0
|
142999.0
|
Ebrill 2012
|
167854.0
|
258688.0
|
159306.0
|
135656.0
|
145481.0
|
Mai 2012
|
168395.0
|
258344.0
|
159939.0
|
136422.0
|
146107.0
|
Mehefin 2012
|
170049.0
|
258978.0
|
161026.0
|
139132.0
|
147312.0
|
Gorffennaf 2012
|
170701.0
|
262303.0
|
161716.0
|
138737.0
|
147598.0
|
Awst 2012
|
170902.0
|
261806.0
|
162361.0
|
139531.0
|
146690.0
|
Medi 2012
|
170295.0
|
261237.0
|
161318.0
|
138796.0
|
146935.0
|
Hydref 2012
|
169090.0
|
259000.0
|
160378.0
|
137277.0
|
146820.0
|
Tachwedd 2012
|
169227.0
|
259437.0
|
160799.0
|
137882.0
|
145538.0
|
Rhagfyr 2012
|
168843.0
|
258319.0
|
159967.0
|
137659.0
|
146086.0
|
Ionawr 2013
|
167716.0
|
257092.0
|
159796.0
|
135862.0
|
145176.0
|
Chwefror 2013
|
167682.0
|
256804.0
|
159123.0
|
136339.0
|
145327.0
|
Mawrth 2013
|
168681.0
|
259167.0
|
159789.0
|
136899.0
|
146369.0
|
Ebrill 2013
|
170335.0
|
260450.0
|
161107.0
|
138400.0
|
148799.0
|
Mai 2013
|
171234.0
|
260496.0
|
162195.0
|
139303.0
|
149967.0
|
Mehefin 2013
|
172655.0
|
262270.0
|
163344.0
|
141073.0
|
150741.0
|
Gorffennaf 2013
|
174592.0
|
265844.0
|
164829.0
|
142178.0
|
153218.0
|
Awst 2013
|
175982.0
|
267844.0
|
166652.0
|
143387.0
|
153718.0
|
Medi 2013
|
176098.0
|
269322.0
|
165787.0
|
143200.0
|
154614.0
|
Hydref 2013
|
175378.0
|
269006.0
|
165631.0
|
141771.0
|
154123.0
|
Tachwedd 2013
|
176352.0
|
268579.0
|
166891.0
|
142982.0
|
155243.0
|
Rhagfyr 2013
|
177971.0
|
268317.0
|
168160.0
|
144659.0
|
158479.0
|
Ionawr 2014
|
178182.0
|
270720.0
|
167392.0
|
144370.0
|
159722.0
|
Chwefror 2014
|
178921.0
|
271506.0
|
168438.0
|
145024.0
|
160105.0
|
Mawrth 2014
|
179537.0
|
270650.0
|
169111.0
|
145778.0
|
161382.0
|
Ebrill 2014
|
183532.0
|
276553.0
|
172427.0
|
149407.0
|
164991.0
|
Mai 2014
|
185476.0
|
278160.0
|
174092.0
|
151064.0
|
167752.0
|
Mehefin 2014
|
187077.0
|
280105.0
|
175845.0
|
152236.0
|
169426.0
|
Gorffennaf 2014
|
189709.0
|
284928.0
|
177787.0
|
154639.0
|
171422.0
|
Awst 2014
|
191932.0
|
288373.0
|
179963.0
|
156321.0
|
173448.0
|
Medi 2014
|
192138.0
|
288877.0
|
179689.0
|
156380.0
|
174245.0
|
Hydref 2014
|
191855.0
|
289113.0
|
179798.0
|
155607.0
|
173923.0
|
Tachwedd 2014
|
191209.0
|
288437.0
|
179485.0
|
154937.0
|
173004.0
|
Rhagfyr 2014
|
191669.0
|
288610.0
|
179502.0
|
155463.0
|
174054.0
|
Ionawr 2015
|
190665.0
|
287731.0
|
178781.0
|
154466.0
|
172120.0
|
Chwefror 2015
|
190827.0
|
288206.0
|
178681.0
|
154721.0
|
172211.0
|
Mawrth 2015
|
191537.0
|
291244.0
|
179440.0
|
154398.0
|
172814.0
|
Ebrill 2015
|
193225.0
|
290900.0
|
181200.0
|
157103.0
|
173968.0
|
Mai 2015
|
195313.0
|
292765.0
|
183485.0
|
158540.0
|
176820.0
|
Mehefin 2015
|
196802.0
|
295273.0
|
185011.0
|
160538.0
|
176467.0
|
Gorffennaf 2015
|
200142.0
|
300451.0
|
187831.0
|
162773.0
|
180567.0
|
Awst 2015
|
201973.0
|
304063.0
|
189427.0
|
164257.0
|
181747.0
|
Medi 2015
|
202389.0
|
306359.0
|
189114.0
|
164097.0
|
182638.0
|
Hydref 2015
|
202664.0
|
305629.0
|
190131.0
|
164702.0
|
182108.0
|
Tachwedd 2015
|
204223.0
|
308059.0
|
191457.0
|
165658.0
|
184151.0
|
Rhagfyr 2015
|
204920.0
|
309668.0
|
191954.0
|
166244.0
|
184535.0
|
Ionawr 2016
|
205464.0
|
308888.0
|
193058.0
|
166316.0
|
186070.0
|
Chwefror 2016
|
205555.0
|
310064.0
|
191992.0
|
166710.0
|
186328.0
|
Mawrth 2016
|
207667.0
|
315018.0
|
192668.0
|
167748.0
|
189784.0
|
Ebrill 2016
|
208443.0
|
311664.0
|
195838.0
|
170071.0
|
187786.0
|
Mai 2016
|
210872.0
|
312710.0
|
197445.0
|
172087.0
|
192744.0
|
Mehefin 2016
|
212887.0
|
319683.0
|
199148.0
|
173343.0
|
192478.0
|
Gorffennaf 2016
|
215127.0
|
321284.0
|
201502.0
|
175506.0
|
194913.0
|
Awst 2016
|
215145.0
|
322479.0
|
201565.0
|
175221.0
|
194503.0
|
Medi 2016
|
214816.0
|
323250.0
|
201442.0
|
174173.0
|
194350.0
|
Hydref 2016
|
214107.0
|
323441.0
|
200703.0
|
172619.0
|
194540.0
|
Tachwedd 2016
|
215113.0
|
326020.0
|
201403.0
|
173104.0
|
195545.0
|
Rhagfyr 2016
|
215500.0
|
325270.0
|
201622.0
|
174168.0
|
195784.0
|
Ionawr 2017
|
215243.0
|
325619.0
|
201371.0
|
173379.0
|
196013.0
|
Chwefror 2017
|
215697.0
|
325218.0
|
201056.0
|
173744.0
|
198126.0
|
Mawrth 2017
|
215236.0
|
325874.0
|
201311.0
|
173148.0
|
196252.0
|
Ebrill 2017
|
218642.0
|
329988.0
|
204170.0
|
176204.0
|
199988.0
|
Mai 2017
|
219954.0
|
328946.0
|
206214.0
|
177040.0
|
202657.0
|
Mehefin 2017
|
221833.0
|
332404.0
|
207393.0
|
179414.0
|
203274.0
|
Gorffennaf 2017
|
224719.0
|
336938.0
|
210202.0
|
181323.0
|
206314.0
|
Awst 2017
|
225738.0
|
338448.0
|
211006.0
|
183039.0
|
206014.0
|
Medi 2017
|
224895.0
|
339644.0
|
210544.0
|
181852.0
|
203916.0
|
Hydref 2017
|
225092.0
|
340120.0
|
211681.0
|
181620.0
|
203418.0
|
Tachwedd 2017
|
224453.0
|
338270.0
|
210962.0
|
181145.0
|
203535.0
|
Rhagfyr 2017
|
225330.0
|
339309.0
|
212011.0
|
182532.0
|
203174.0
|
Ionawr 2018
|
224544.0
|
339693.0
|
211153.0
|
180114.0
|
204664.0
|
Chwefror 2018
|
225131.0
|
341648.0
|
211191.0
|
180931.0
|
204539.0
|
Mawrth 2018
|
223772.0
|
339364.0
|
210734.0
|
180601.0
|
201236.0
|
Ebrill 2018
|
225910.0
|
340713.0
|
212988.0
|
182903.0
|
203360.0
|
Mai 2018
|
226834.0
|
342550.0
|
213842.0
|
183523.0
|
204081.0
|
Dyddiad
|
Pob math o eiddo
|
Tai ar wahân
|
Tai pâr
|
Tai teras
|
Fflatiau a fflatiau deulawr
|
Ebrill 1998
|
12.6
|
|
|
|
|
Mai 1998
|
12.6
|
|
|
|
|
Mehefin 1998
|
12.6
|
|
|
|
|
Gorffennaf 1998
|
11.8
|
|
|
|
|
Awst 1998
|
11.8
|
|
|
|
|
Medi 1998
|
11.8
|
|
|
|
|
Hydref 1998
|
12.2
|
|
|
|
|
Tachwedd 1998
|
12.2
|
|
|
|
|
Rhagfyr 1998
|
12.2
|
|
|
|
|
Ionawr 1999
|
10.1
|
|
|
|
|
Chwefror 1999
|
10.1
|
|
|
|
|
Mawrth 1999
|
10.1
|
|
|
|
|
Ebrill 1999
|
8.9
|
|
|
|
|
Mai 1999
|
8.9
|
|
|
|
|
Mehefin 1999
|
8.9
|
|
|
|
|
Gorffennaf 1999
|
10.5
|
|
|
|
|
Awst 1999
|
10.5
|
|
|
|
|
Medi 1999
|
10.5
|
|
|
|
|
Hydref 1999
|
13.8
|
|
|
|
|
Tachwedd 1999
|
13.8
|
|
|
|
|
Rhagfyr 1999
|
13.8
|
|
|
|
|
Ionawr 2000
|
16.1
|
|
|
|
|
Chwefror 2000
|
16.1
|
|
|
|
|
Mawrth 2000
|
16.1
|
|
|
|
|
Ebrill 2000
|
17.4
|
|
|
|
|
Mai 2000
|
17.4
|
|
|
|
|
Mehefin 2000
|
17.4
|
|
|
|
|
Gorffennaf 2000
|
13.0
|
|
|
|
|
Awst 2000
|
13.0
|
|
|
|
|
Medi 2000
|
13.0
|
|
|
|
|
Hydref 2000
|
13.5
|
|
|
|
|
Tachwedd 2000
|
13.5
|
|
|
|
|
Rhagfyr 2000
|
13.5
|
|
|
|
|
Ionawr 2001
|
10.1
|
|
|
|
|
Chwefror 2001
|
10.1
|
|
|
|
|
Mawrth 2001
|
10.1
|
|
|
|
|
Ebrill 2001
|
8.2
|
|
|
|
|
Mai 2001
|
8.2
|
|
|
|
|
Mehefin 2001
|
8.2
|
|
|
|
|
Gorffennaf 2001
|
10.0
|
|
|
|
|
Awst 2001
|
10.0
|
|
|
|
|
Medi 2001
|
10.0
|
|
|
|
|
Hydref 2001
|
4.6
|
|
|
|
|
Tachwedd 2001
|
4.6
|
|
|
|
|
Rhagfyr 2001
|
4.6
|
|
|
|
|
Ionawr 2002
|
4.8
|
|
|
|
|
Chwefror 2002
|
8.6
|
|
|
|
|
Mawrth 2002
|
12.4
|
|
|
|
|
Ebrill 2002
|
10.0
|
|
|
|
|
Mai 2002
|
12.8
|
|
|
|
|
Mehefin 2002
|
17.4
|
|
|
|
|
Gorffennaf 2002
|
14.2
|
|
|
|
|
Awst 2002
|
16.8
|
|
|
|
|
Medi 2002
|
19.6
|
|
|
|
|
Hydref 2002
|
23.0
|
|
|
|
|
Tachwedd 2002
|
24.2
|
|
|
|
|
Rhagfyr 2002
|
28.4
|
|
|
|
|
Ionawr 2003
|
27.9
|
|
|
|
|
Chwefror 2003
|
22.1
|
|
|
|
|
Mawrth 2003
|
20.5
|
|
|
|
|
Ebrill 2003
|
21.7
|
|
|
|
|
Mai 2003
|
17.8
|
|
|
|
|
Mehefin 2003
|
13.5
|
|
|
|
|
Gorffennaf 2003
|
14.5
|
|
|
|
|
Awst 2003
|
14.0
|
|
|
|
|
Medi 2003
|
11.0
|
|
|
|
|
Hydref 2003
|
12.1
|
|
|
|
|
Tachwedd 2003
|
9.7
|
|
|
|
|
Rhagfyr 2003
|
8.3
|
|
|
|
|
Ionawr 2004
|
9.7
|
|
|
|
|
Chwefror 2004
|
9.8
|
|
|
|
|
Mawrth 2004
|
7.8
|
|
|
|
|
Ebrill 2004
|
10.0
|
|
|
|
|
Mai 2004
|
12.2
|
|
|
|
|
Mehefin 2004
|
13.8
|
|
|
|
|
Gorffennaf 2004
|
14.3
|
|
|
|
|
Awst 2004
|
13.6
|
|
|
|
|
Medi 2004
|
13.7
|
|
|
|
|
Hydref 2004
|
12.6
|
|
|
|
|
Tachwedd 2004
|
13.7
|
|
|
|
|
Rhagfyr 2004
|
10.7
|
|
|
|
|
Ionawr 2005
|
10.0
|
|
|
|
|
Chwefror 2005
|
10.9
|
|
|
|
|
Mawrth 2005
|
11.6
|
|
|
|
|
Ebrill 2005
|
8.3
|
|
|
|
|
Mai 2005
|
8.1
|
|
|
|
|
Mehefin 2005
|
7.1
|
|
|
|
|
Gorffennaf 2005
|
6.2
|
|
|
|
|
Awst 2005
|
5.4
|
|
|
|
|
Medi 2005
|
5.5
|
|
|
|
|
Hydref 2005
|
4.5
|
|
|
|
|
Tachwedd 2005
|
4.9
|
|
|
|
|
Rhagfyr 2005
|
6.3
|
|
|
|
|
Ionawr 2006
|
6.2
|
3.7
|
5.6
|
7.7
|
7.0
|
Chwefror 2006
|
6.5
|
3.7
|
5.2
|
8.3
|
8.0
|
Mawrth 2006
|
6.5
|
4.6
|
5.6
|
7.8
|
7.3
|
Ebrill 2006
|
7.2
|
5.6
|
6.4
|
9.0
|
7.5
|
Mai 2006
|
7.1
|
5.0
|
6.4
|
8.3
|
8.3
|
Mehefin 2006
|
7.3
|
5.7
|
6.6
|
8.3
|
8.3
|
Gorffennaf 2006
|
7.4
|
5.8
|
6.2
|
9.2
|
8.0
|
Awst 2006
|
7.9
|
6.1
|
7.4
|
9.3
|
8.4
|
Medi 2006
|
8.5
|
7.1
|
8.0
|
9.2
|
9.8
|
Hydref 2006
|
9.4
|
7.8
|
8.5
|
10.4
|
10.6
|
Tachwedd 2006
|
9.6
|
8.3
|
9.1
|
10.7
|
10.1
|
Rhagfyr 2006
|
10.4
|
9.4
|
10.0
|
11.4
|
10.5
|
Ionawr 2007
|
10.5
|
9.5
|
10.0
|
11.8
|
10.8
|
Chwefror 2007
|
10.6
|
10.0
|
10.1
|
11.4
|
11.3
|
Mawrth 2007
|
10.6
|
9.4
|
9.9
|
12.1
|
11.0
|
Ebrill 2007
|
10.4
|
9.7
|
9.3
|
11.5
|
11.5
|
Mai 2007
|
10.6
|
9.2
|
9.6
|
11.8
|
12.0
|
Mehefin 2007
|
10.8
|
10.4
|
9.7
|
11.5
|
12.0
|
Gorffennaf 2007
|
10.6
|
10.6
|
9.4
|
10.7
|
12.6
|
Awst 2007
|
10.3
|
10.0
|
9.2
|
10.9
|
11.7
|
Medi 2007
|
10.0
|
9.9
|
8.7
|
10.3
|
11.8
|
Hydref 2007
|
9.1
|
9.3
|
7.7
|
9.3
|
11.0
|
Tachwedd 2007
|
8.5
|
8.7
|
7.1
|
8.2
|
11.0
|
Rhagfyr 2007
|
7.0
|
7.6
|
5.9
|
6.6
|
8.7
|
Ionawr 2008
|
5.1
|
4.5
|
3.6
|
4.7
|
9.2
|
Chwefror 2008
|
3.9
|
3.5
|
2.9
|
3.9
|
6.7
|
Mawrth 2008
|
2.4
|
1.8
|
1.8
|
2.1
|
5.2
|
Ebrill 2008
|
0.5
|
0.7
|
-0.3
|
0.3
|
2.9
|
Mai 2008
|
-0.0
|
-0.1
|
-0.2
|
-0.2
|
1.7
|
Mehefin 2008
|
-2.4
|
-2.6
|
-2.4
|
-2.5
|
-0.9
|
Gorffennaf 2008
|
-4.7
|
-5.2
|
-4.7
|
-4.9
|
-2.7
|
Awst 2008
|
-7.2
|
-7.5
|
-7.3
|
-7.7
|
-5.0
|
Medi 2008
|
-9.7
|
-9.1
|
-10.0
|
-10.0
|
-8.1
|
Hydref 2008
|
-11.3
|
-11.3
|
-11.2
|
-11.8
|
-9.7
|
Tachwedd 2008
|
-13.7
|
-14.2
|
-13.5
|
-13.8
|
-12.5
|
Rhagfyr 2008
|
-14.9
|
-14.8
|
-14.7
|
-14.5
|
-14.7
|
Ionawr 2009
|
-15.4
|
-13.9
|
-15.3
|
-15.9
|
-16.3
|
Chwefror 2009
|
-15.6
|
-15.0
|
-15.3
|
-16.0
|
-16.1
|
Mawrth 2009
|
-15.5
|
-14.4
|
-16.0
|
-16.2
|
-15.2
|
Ebrill 2009
|
-14.9
|
-14.6
|
-14.4
|
-15.3
|
-15.5
|
Mai 2009
|
-14.2
|
-13.4
|
-14.1
|
-14.5
|
-15.0
|
Mehefin 2009
|
-12.2
|
-11.0
|
-12.4
|
-12.5
|
-13.0
|
Gorffennaf 2009
|
-9.7
|
-8.8
|
-9.5
|
-9.5
|
-11.3
|
Awst 2009
|
-6.8
|
-6.2
|
-6.5
|
-6.6
|
-8.8
|
Medi 2009
|
-3.7
|
-4.0
|
-3.3
|
-3.2
|
-5.0
|
Hydref 2009
|
-1.0
|
-0.7
|
-0.4
|
-0.4
|
-3.5
|
Tachwedd 2009
|
2.2
|
3.3
|
1.9
|
3.0
|
-0.3
|
Rhagfyr 2009
|
4.4
|
4.1
|
5.0
|
5.1
|
2.7
|
Ionawr 2010
|
6.5
|
7.4
|
7.2
|
7.4
|
3.3
|
Chwefror 2010
|
8.0
|
9.7
|
8.6
|
8.8
|
4.1
|
Mawrth 2010
|
8.7
|
10.1
|
9.3
|
9.1
|
5.7
|
Ebrill 2010
|
9.1
|
10.5
|
9.4
|
9.2
|
6.9
|
Mai 2010
|
8.1
|
10.0
|
8.2
|
8.3
|
5.6
|
Mehefin 2010
|
7.6
|
8.4
|
8.0
|
8.0
|
5.5
|
Gorffennaf 2010
|
6.8
|
8.7
|
6.8
|
6.6
|
4.9
|
Awst 2010
|
5.7
|
7.5
|
6.2
|
5.1
|
4.0
|
Medi 2010
|
4.6
|
6.6
|
4.8
|
4.4
|
2.5
|
Hydref 2010
|
2.8
|
4.5
|
2.7
|
2.2
|
1.7
|
Tachwedd 2010
|
1.2
|
3.1
|
1.7
|
-0.2
|
0.4
|
Rhagfyr 2010
|
0.4
|
2.9
|
0.2
|
-1.1
|
-0.2
|
Ionawr 2011
|
-0.1
|
0.7
|
-0.4
|
-1.0
|
0.7
|
Chwefror 2011
|
-0.9
|
0.3
|
-1.7
|
-1.8
|
0.2
|
Mawrth 2011
|
-1.3
|
-0.0
|
-1.9
|
-2.0
|
-1.0
|
Ebrill 2011
|
-1.1
|
-0.1
|
-2.0
|
-1.6
|
0.1
|
Mai 2011
|
-2.0
|
-1.9
|
-2.1
|
-2.7
|
-0.7
|
Mehefin 2011
|
-2.3
|
-2.0
|
-2.4
|
-3.2
|
-1.2
|
Gorffennaf 2011
|
-2.0
|
-2.6
|
-2.6
|
-2.6
|
0.3
|
Awst 2011
|
-2.0
|
-1.9
|
-2.4
|
-2.2
|
-1.1
|
Medi 2011
|
-2.0
|
-1.9
|
-2.2
|
-2.4
|
-1.1
|
Hydref 2011
|
-2.0
|
-1.6
|
-2.1
|
-2.6
|
-1.3
|
Tachwedd 2011
|
-0.7
|
-1.4
|
-1.0
|
-1.0
|
0.9
|
Rhagfyr 2011
|
-1.0
|
-1.3
|
-1.0
|
-1.4
|
0.2
|
Ionawr 2012
|
-0.8
|
-1.7
|
-0.2
|
-0.8
|
-0.8
|
Chwefror 2012
|
-0.6
|
-1.2
|
-0.1
|
-0.1
|
-1.2
|
Mawrth 2012
|
0.2
|
-2.1
|
1.1
|
1.2
|
0.2
|
Ebrill 2012
|
-0.2
|
-0.4
|
0.1
|
-0.5
|
-0.0
|
Mai 2012
|
0.6
|
0.2
|
0.4
|
0.8
|
0.7
|
Mehefin 2012
|
1.4
|
0.8
|
0.8
|
2.3
|
1.5
|
Gorffennaf 2012
|
0.5
|
0.4
|
0.5
|
0.9
|
-0.1
|
Awst 2012
|
0.6
|
-0.7
|
0.2
|
1.5
|
1.1
|
Medi 2012
|
0.4
|
-0.7
|
0.3
|
1.1
|
1.1
|
Hydref 2012
|
0.8
|
-0.8
|
0.4
|
1.6
|
2.5
|
Tachwedd 2012
|
0.9
|
-0.2
|
0.7
|
2.2
|
0.4
|
Rhagfyr 2012
|
1.1
|
0.6
|
0.4
|
1.9
|
1.4
|
Ionawr 2013
|
1.1
|
0.2
|
0.9
|
1.4
|
2.1
|
Chwefror 2013
|
1.3
|
0.4
|
0.8
|
1.6
|
3.0
|
Mawrth 2013
|
1.6
|
2.6
|
0.9
|
1.2
|
2.4
|
Ebrill 2013
|
1.5
|
0.7
|
1.1
|
2.0
|
2.3
|
Mai 2013
|
1.7
|
0.8
|
1.4
|
2.1
|
2.6
|
Mehefin 2013
|
1.5
|
1.3
|
1.4
|
1.4
|
2.3
|
Gorffennaf 2013
|
2.3
|
1.4
|
1.9
|
2.5
|
3.8
|
Awst 2013
|
3.0
|
2.3
|
2.6
|
2.8
|
4.8
|
Medi 2013
|
3.4
|
3.1
|
2.8
|
3.2
|
5.2
|
Hydref 2013
|
3.7
|
3.9
|
3.3
|
3.3
|
5.0
|
Tachwedd 2013
|
4.2
|
3.5
|
3.8
|
3.7
|
6.7
|
Rhagfyr 2013
|
5.4
|
3.9
|
5.1
|
5.1
|
8.5
|
Ionawr 2014
|
6.2
|
5.3
|
4.8
|
6.3
|
10.0
|
Chwefror 2014
|
6.7
|
5.7
|
5.8
|
6.4
|
10.2
|
Mawrth 2014
|
6.4
|
4.4
|
5.8
|
6.5
|
10.3
|
Ebrill 2014
|
7.8
|
6.2
|
7.0
|
8.0
|
10.9
|
Mai 2014
|
8.3
|
6.8
|
7.3
|
8.4
|
11.9
|
Mehefin 2014
|
8.4
|
6.8
|
7.6
|
7.9
|
12.4
|
Gorffennaf 2014
|
8.7
|
7.2
|
7.9
|
8.8
|
11.9
|
Awst 2014
|
9.1
|
7.7
|
8.0
|
9.0
|
12.8
|
Medi 2014
|
9.1
|
7.3
|
8.4
|
9.2
|
12.7
|
Hydref 2014
|
9.4
|
7.5
|
8.6
|
9.8
|
12.8
|
Tachwedd 2014
|
8.4
|
7.4
|
7.6
|
8.4
|
11.4
|
Rhagfyr 2014
|
7.7
|
7.6
|
6.8
|
7.5
|
9.8
|
Ionawr 2015
|
7.0
|
6.3
|
6.8
|
7.0
|
7.8
|
Chwefror 2015
|
6.6
|
6.2
|
6.1
|
6.7
|
7.6
|
Mawrth 2015
|
6.7
|
7.6
|
6.1
|
5.9
|
7.1
|
Ebrill 2015
|
5.3
|
5.2
|
5.1
|
5.2
|
5.4
|
Mai 2015
|
5.3
|
5.2
|
5.4
|
5.0
|
5.4
|
Mehefin 2015
|
5.2
|
5.4
|
5.2
|
5.4
|
4.2
|
Gorffennaf 2015
|
5.5
|
5.4
|
5.6
|
5.3
|
5.3
|
Awst 2015
|
5.2
|
5.4
|
5.3
|
5.1
|
4.8
|
Medi 2015
|
5.3
|
6.0
|
5.2
|
4.9
|
4.8
|
Hydref 2015
|
5.6
|
5.7
|
5.8
|
5.8
|
4.7
|
Tachwedd 2015
|
6.8
|
6.8
|
6.7
|
6.9
|
6.4
|
Rhagfyr 2015
|
6.9
|
7.3
|
6.9
|
6.9
|
6.0
|
Ionawr 2016
|
7.8
|
7.4
|
8.0
|
7.7
|
8.1
|
Chwefror 2016
|
7.7
|
7.6
|
7.4
|
7.8
|
8.2
|
Mawrth 2016
|
8.4
|
8.2
|
7.4
|
8.6
|
9.8
|
Ebrill 2016
|
7.9
|
7.1
|
8.1
|
8.2
|
7.9
|
Mai 2016
|
8.0
|
6.8
|
7.6
|
8.5
|
9.0
|
Mehefin 2016
|
8.2
|
8.3
|
7.6
|
8.0
|
9.1
|
Gorffennaf 2016
|
7.5
|
6.9
|
7.3
|
7.8
|
7.9
|
Awst 2016
|
6.5
|
6.1
|
6.4
|
6.7
|
7.0
|
Medi 2016
|
6.1
|
5.5
|
6.5
|
6.1
|
6.4
|
Hydref 2016
|
5.6
|
5.8
|
5.6
|
4.8
|
6.8
|
Tachwedd 2016
|
5.3
|
5.8
|
5.2
|
4.5
|
6.2
|
Rhagfyr 2016
|
5.2
|
5.0
|
5.0
|
4.8
|
6.1
|
Ionawr 2017
|
4.8
|
5.4
|
4.3
|
4.2
|
5.3
|
Chwefror 2017
|
4.9
|
4.9
|
4.7
|
4.2
|
6.3
|
Mawrth 2017
|
3.6
|
3.4
|
4.5
|
3.2
|
3.4
|
Ebrill 2017
|
4.9
|
5.9
|
4.2
|
3.6
|
6.5
|
Mai 2017
|
4.3
|
5.2
|
4.4
|
2.9
|
5.1
|
Mehefin 2017
|
4.2
|
4.0
|
4.1
|
3.5
|
5.6
|
Gorffennaf 2017
|
4.5
|
4.9
|
4.3
|
3.3
|
5.8
|
Awst 2017
|
4.9
|
5.0
|
4.7
|
4.5
|
5.9
|
Medi 2017
|
4.7
|
5.1
|
4.5
|
4.4
|
4.9
|
Hydref 2017
|
5.1
|
5.2
|
5.5
|
5.2
|
4.6
|
Tachwedd 2017
|
4.3
|
3.8
|
4.8
|
4.6
|
4.1
|
Rhagfyr 2017
|
4.6
|
4.3
|
5.2
|
4.8
|
3.8
|
Ionawr 2018
|
4.3
|
4.3
|
4.9
|
4.2
|
3.8
|
Chwefror 2018
|
4.4
|
5.0
|
5.0
|
4.5
|
2.6
|
Mawrth 2018
|
4.0
|
4.1
|
4.7
|
4.6
|
1.9
|
Ebrill 2018
|
3.3
|
3.2
|
4.3
|
4.1
|
1.1
|
Mai 2018
|
3.1
|
4.1
|
3.7
|
4.0
|
0.1
|
Dyddiad
|
Pob math o eiddo
|
Tai ar wahân
|
Tai pâr
|
Tai teras
|
Fflatiau a fflatiau deulawr
|
Ebrill 1998
|
5.3
|
|
|
|
|
Mai 1998
|
5.3
|
|
|
|
|
Mehefin 1998
|
5.3
|
|
|
|
|
Gorffennaf 1998
|
4.4
|
|
|
|
|
Awst 1998
|
4.4
|
|
|
|
|
Medi 1998
|
4.4
|
|
|
|
|
Hydref 1998
|
-0.4
|
|
|
|
|
Tachwedd 1998
|
-0.4
|
|
|
|
|
Rhagfyr 1998
|
-0.4
|
|
|
|
|
Ionawr 1999
|
0.6
|
|
|
|
|
Chwefror 1999
|
0.6
|
|
|
|
|
Mawrth 1999
|
0.6
|
|
|
|
|
Ebrill 1999
|
4.2
|
|
|
|
|
Mai 1999
|
4.2
|
|
|
|
|
Mehefin 1999
|
4.2
|
|
|
|
|
Gorffennaf 1999
|
5.8
|
|
|
|
|
Awst 1999
|
5.8
|
|
|
|
|
Medi 1999
|
5.8
|
|
|
|
|
Hydref 1999
|
2.6
|
|
|
|
|
Tachwedd 1999
|
2.6
|
|
|
|
|
Rhagfyr 1999
|
2.6
|
|
|
|
|
Ionawr 2000
|
2.6
|
|
|
|
|
Chwefror 2000
|
2.6
|
|
|
|
|
Mawrth 2000
|
2.6
|
|
|
|
|
Ebrill 2000
|
5.4
|
|
|
|
|
Mai 2000
|
5.4
|
|
|
|
|
Mehefin 2000
|
5.4
|
|
|
|
|
Gorffennaf 2000
|
1.9
|
|
|
|
|
Awst 2000
|
1.9
|
|
|
|
|
Medi 2000
|
1.9
|
|
|
|
|
Hydref 2000
|
3.0
|
|
|
|
|
Tachwedd 2000
|
3.0
|
|
|
|
|
Rhagfyr 2000
|
3.0
|
|
|
|
|
Ionawr 2001
|
-0.5
|
|
|
|
|
Chwefror 2001
|
-0.5
|
|
|
|
|
Mawrth 2001
|
-0.5
|
|
|
|
|
Ebrill 2001
|
3.6
|
|
|
|
|
Mai 2001
|
3.6
|
|
|
|
|
Mehefin 2001
|
3.6
|
|
|
|
|
Gorffennaf 2001
|
3.6
|
|
|
|
|
Awst 2001
|
3.6
|
|
|
|
|
Medi 2001
|
3.6
|
|
|
|
|
Hydref 2001
|
-2.0
|
|
|
|
|
Tachwedd 2001
|
-2.0
|
|
|
|
|
Rhagfyr 2001
|
-2.0
|
|
|
|
|
Ionawr 2002
|
-0.4
|
|
|
|
|
Chwefror 2002
|
3.6
|
|
|
|
|
Mawrth 2002
|
3.5
|
|
|
|
|
Ebrill 2002
|
1.4
|
|
|
|
|
Mai 2002
|
2.6
|
|
|
|
|
Mehefin 2002
|
4.1
|
|
|
|
|
Gorffennaf 2002
|
0.8
|
|
|
|
|
Awst 2002
|
2.2
|
|
|
|
|
Medi 2002
|
2.4
|
|
|
|
|
Hydref 2002
|
0.8
|
|
|
|
|
Tachwedd 2002
|
1.0
|
|
|
|
|
Rhagfyr 2002
|
3.3
|
|
|
|
|
Ionawr 2003
|
-0.7
|
|
|
|
|
Chwefror 2003
|
-1.0
|
|
|
|
|
Mawrth 2003
|
2.1
|
|
|
|
|
Ebrill 2003
|
2.4
|
|
|
|
|
Mai 2003
|
-0.7
|
|
|
|
|
Mehefin 2003
|
0.2
|
|
|
|
|
Gorffennaf 2003
|
1.7
|
|
|
|
|
Awst 2003
|
1.8
|
|
|
|
|
Medi 2003
|
-0.3
|
|
|
|
|
Hydref 2003
|
1.8
|
|
|
|
|
Tachwedd 2003
|
-1.1
|
|
|
|
|
Rhagfyr 2003
|
2.0
|
|
|
|
|
Ionawr 2004
|
0.6
|
|
|
|
|
Chwefror 2004
|
-1.0
|
|
|
|
|
Mawrth 2004
|
0.2
|
|
|
|
|
Ebrill 2004
|
4.5
|
|
|
|
|
Mai 2004
|
1.2
|
|
|
|
|
Mehefin 2004
|
1.8
|
|
|
|
|
Gorffennaf 2004
|
2.1
|
|
|
|
|
Awst 2004
|
1.2
|
|
|
|
|
Medi 2004
|
-0.2
|
|
|
|
|
Hydref 2004
|
0.7
|
|
|
|
|
Tachwedd 2004
|
-0.1
|
|
|
|
|
Rhagfyr 2004
|
-0.7
|
|
|
|
|
Ionawr 2005
|
-0.1
|
|
|
|
|
Chwefror 2005
|
-0.1
|
-0.7
|
0.5
|
-0.3
|
0.0
|
Mawrth 2005
|
0.8
|
0.2
|
0.5
|
1.3
|
1.0
|
Ebrill 2005
|
1.4
|
0.6
|
1.6
|
1.6
|
1.7
|
Mai 2005
|
1.1
|
1.8
|
0.6
|
1.1
|
1.0
|
Mehefin 2005
|
0.8
|
-0.6
|
0.7
|
1.5
|
1.0
|
Gorffennaf 2005
|
1.3
|
2.1
|
1.7
|
1.0
|
0.5
|
Awst 2005
|
0.4
|
1.0
|
-0.3
|
0.5
|
0.6
|
Medi 2005
|
-0.2
|
-0.7
|
-0.2
|
0.4
|
-0.5
|
Hydref 2005
|
-0.2
|
-0.1
|
0.1
|
-0.4
|
-0.2
|
Tachwedd 2005
|
0.3
|
0.1
|
0.2
|
0.3
|
0.4
|
Rhagfyr 2005
|
0.6
|
-1.1
|
-0.1
|
1.0
|
2.0
|
Ionawr 2006
|
-0.2
|
1.0
|
0.1
|
-0.6
|
-0.7
|
Chwefror 2006
|
0.2
|
-0.6
|
0.0
|
0.2
|
1.0
|
Mawrth 2006
|
0.8
|
1.1
|
0.9
|
0.8
|
0.4
|
Ebrill 2006
|
2.2
|
1.4
|
2.3
|
2.7
|
1.9
|
Mai 2006
|
1.0
|
1.2
|
0.7
|
0.5
|
1.8
|
Mehefin 2006
|
1.0
|
0.1
|
0.9
|
1.5
|
0.9
|
Gorffennaf 2006
|
1.4
|
2.2
|
1.4
|
1.8
|
0.2
|
Awst 2006
|
0.8
|
1.3
|
0.8
|
0.5
|
1.0
|
Medi 2006
|
0.4
|
0.2
|
0.4
|
0.3
|
0.8
|
Hydref 2006
|
0.6
|
0.5
|
0.6
|
0.7
|
0.5
|
Tachwedd 2006
|
0.5
|
0.6
|
0.7
|
0.6
|
0.1
|
Rhagfyr 2006
|
1.2
|
-0.1
|
0.8
|
1.7
|
2.4
|
Ionawr 2007
|
-0.0
|
1.2
|
0.1
|
-0.2
|
-0.4
|
Chwefror 2007
|
0.3
|
-0.2
|
0.2
|
-0.1
|
1.4
|
Mawrth 2007
|
0.8
|
0.6
|
0.7
|
1.5
|
0.1
|
Ebrill 2007
|
2.0
|
1.6
|
1.8
|
2.2
|
2.3
|
Mai 2007
|
1.2
|
0.8
|
0.9
|
0.7
|
2.2
|
Mehefin 2007
|
1.1
|
1.2
|
1.0
|
1.3
|
0.9
|
Gorffennaf 2007
|
1.3
|
2.3
|
1.2
|
1.1
|
0.7
|
Awst 2007
|
0.6
|
0.8
|
0.6
|
0.7
|
0.2
|
Medi 2007
|
0.1
|
0.2
|
-0.1
|
-0.2
|
0.8
|
Hydref 2007
|
-0.2
|
-0.1
|
-0.4
|
-0.2
|
-0.2
|
Tachwedd 2007
|
-0.1
|
0.1
|
0.2
|
-0.4
|
0.0
|
Rhagfyr 2007
|
-0.2
|
-1.1
|
-0.3
|
0.2
|
0.4
|
Ionawr 2008
|
-1.8
|
-1.8
|
-2.1
|
-2.0
|
0.1
|
Chwefror 2008
|
-0.9
|
-1.1
|
-0.5
|
-0.9
|
-1.0
|
Mawrth 2008
|
-0.7
|
-1.1
|
-0.4
|
-0.3
|
-1.3
|
Ebrill 2008
|
0.2
|
0.5
|
-0.3
|
0.4
|
0.1
|
Mai 2008
|
0.6
|
0.0
|
1.0
|
0.3
|
1.1
|
Mehefin 2008
|
-1.3
|
-1.3
|
-1.3
|
-1.1
|
-1.7
|
Gorffennaf 2008
|
-1.1
|
-0.4
|
-1.2
|
-1.5
|
-1.0
|
Awst 2008
|
-2.1
|
-1.7
|
-2.2
|
-2.2
|
-2.2
|
Medi 2008
|
-2.5
|
-1.6
|
-3.0
|
-2.8
|
-2.4
|
Hydref 2008
|
-2.0
|
-2.5
|
-1.7
|
-2.1
|
-1.9
|
Tachwedd 2008
|
-2.8
|
-3.1
|
-2.4
|
-2.8
|
-3.1
|
Rhagfyr 2008
|
-1.5
|
-1.9
|
-1.8
|
-0.6
|
-2.2
|
Ionawr 2009
|
-2.3
|
-0.7
|
-2.8
|
-3.6
|
-1.8
|
Chwefror 2009
|
-1.2
|
-2.4
|
-0.6
|
-1.0
|
-0.7
|
Mawrth 2009
|
-0.6
|
-0.4
|
-1.2
|
-0.5
|
-0.2
|
Ebrill 2009
|
0.9
|
0.3
|
1.6
|
1.4
|
-0.3
|
Mai 2009
|
1.4
|
1.4
|
1.3
|
1.2
|
1.7
|
Mehefin 2009
|
1.0
|
1.4
|
0.7
|
1.2
|
0.6
|
Gorffennaf 2009
|
1.8
|
2.1
|
2.0
|
1.9
|
0.9
|
Awst 2009
|
1.0
|
1.2
|
1.1
|
0.9
|
0.5
|
Medi 2009
|
0.8
|
0.6
|
0.4
|
0.8
|
1.6
|
Hydref 2009
|
0.7
|
0.9
|
1.2
|
0.6
|
-0.4
|
Tachwedd 2009
|
0.3
|
0.7
|
-0.2
|
0.6
|
0.2
|
Rhagfyr 2009
|
0.7
|
-1.1
|
1.3
|
1.4
|
0.8
|
Ionawr 2010
|
-0.4
|
2.4
|
-0.8
|
-1.6
|
-1.2
|
Chwefror 2010
|
0.2
|
-0.3
|
0.7
|
0.4
|
0.1
|
Mawrth 2010
|
-0.0
|
-0.0
|
-0.6
|
-0.2
|
1.2
|
Ebrill 2010
|
1.3
|
0.7
|
1.8
|
1.6
|
0.9
|
Mai 2010
|
0.5
|
1.0
|
0.1
|
0.4
|
0.4
|
Mehefin 2010
|
0.5
|
-0.1
|
0.6
|
1.0
|
0.5
|
Gorffennaf 2010
|
1.0
|
2.3
|
0.9
|
0.5
|
0.3
|
Awst 2010
|
-0.0
|
0.1
|
0.6
|
-0.5
|
-0.3
|
Medi 2010
|
-0.3
|
-0.2
|
-1.0
|
0.1
|
0.2
|
Hydref 2010
|
-1.1
|
-1.1
|
-0.7
|
-1.4
|
-1.2
|
Tachwedd 2010
|
-1.2
|
-0.7
|
-1.2
|
-1.8
|
-1.0
|
Rhagfyr 2010
|
-0.2
|
-1.2
|
-0.2
|
0.5
|
0.2
|
Ionawr 2011
|
-0.8
|
0.2
|
-1.4
|
-1.4
|
-0.4
|
Chwefror 2011
|
-0.5
|
-0.7
|
-0.5
|
-0.5
|
-0.4
|
Mawrth 2011
|
-0.5
|
-0.4
|
-0.8
|
-0.5
|
-0.0
|
Ebrill 2011
|
1.6
|
0.6
|
1.6
|
2.0
|
2.0
|
Mai 2011
|
-0.4
|
-0.8
|
0.1
|
-0.7
|
-0.4
|
Mehefin 2011
|
0.2
|
-0.3
|
0.3
|
0.5
|
0.0
|
Gorffennaf 2011
|
1.3
|
1.7
|
0.7
|
1.1
|
1.8
|
Awst 2011
|
0.1
|
0.8
|
0.7
|
-0.1
|
-1.8
|
Medi 2011
|
-0.2
|
-0.2
|
-0.7
|
-0.1
|
0.2
|
Hydref 2011
|
-1.1
|
-0.8
|
-0.7
|
-1.6
|
-1.4
|
Tachwedd 2011
|
0.1
|
-0.5
|
-0.0
|
-0.2
|
1.2
|
Rhagfyr 2011
|
-0.4
|
-1.1
|
-0.2
|
0.1
|
-0.6
|
Ionawr 2012
|
-0.7
|
-0.2
|
-0.6
|
-0.8
|
-1.4
|
Chwefror 2012
|
-0.3
|
-0.3
|
-0.4
|
0.1
|
-0.8
|
Mawrth 2012
|
0.3
|
-1.2
|
0.4
|
0.9
|
1.4
|
Ebrill 2012
|
1.2
|
2.4
|
0.6
|
0.3
|
1.7
|
Mai 2012
|
0.3
|
-0.1
|
0.4
|
0.6
|
0.4
|
Mehefin 2012
|
1.0
|
0.2
|
0.7
|
2.0
|
0.8
|
Gorffennaf 2012
|
0.4
|
1.3
|
0.4
|
-0.3
|
0.2
|
Awst 2012
|
0.1
|
-0.2
|
0.4
|
0.6
|
-0.6
|
Medi 2012
|
-0.4
|
-0.2
|
-0.6
|
-0.5
|
0.2
|
Hydref 2012
|
-0.7
|
-0.9
|
-0.6
|
-1.1
|
-0.1
|
Tachwedd 2012
|
0.1
|
0.2
|
0.3
|
0.4
|
-0.9
|
Rhagfyr 2012
|
-0.2
|
-0.4
|
-0.5
|
-0.2
|
0.4
|
Ionawr 2013
|
-0.7
|
-0.5
|
-0.1
|
-1.3
|
-0.6
|
Chwefror 2013
|
-0.0
|
-0.1
|
-0.4
|
0.4
|
0.1
|
Mawrth 2013
|
0.6
|
0.9
|
0.4
|
0.4
|
0.7
|
Ebrill 2013
|
1.0
|
0.5
|
0.8
|
1.1
|
1.7
|
Mai 2013
|
0.5
|
0.0
|
0.7
|
0.6
|
0.8
|
Mehefin 2013
|
0.8
|
0.7
|
0.7
|
1.3
|
0.5
|
Gorffennaf 2013
|
1.1
|
1.4
|
0.9
|
0.8
|
1.6
|
Awst 2013
|
0.8
|
0.8
|
1.1
|
0.8
|
0.3
|
Medi 2013
|
0.1
|
0.6
|
-0.5
|
-0.1
|
0.6
|
Hydref 2013
|
-0.4
|
-0.1
|
-0.1
|
-1.0
|
-0.3
|
Tachwedd 2013
|
0.6
|
-0.2
|
0.8
|
0.8
|
0.7
|
Rhagfyr 2013
|
0.9
|
-0.1
|
0.8
|
1.2
|
2.1
|
Ionawr 2014
|
0.1
|
0.9
|
-0.5
|
-0.2
|
0.8
|
Chwefror 2014
|
0.4
|
0.3
|
0.6
|
0.4
|
0.2
|
Mawrth 2014
|
0.3
|
-0.3
|
0.4
|
0.5
|
0.8
|
Ebrill 2014
|
2.2
|
2.2
|
2.0
|
2.5
|
2.2
|
Mai 2014
|
1.1
|
0.6
|
1.0
|
1.1
|
1.7
|
Mehefin 2014
|
0.9
|
0.7
|
1.0
|
0.8
|
1.0
|
Gorffennaf 2014
|
1.4
|
1.7
|
1.1
|
1.6
|
1.2
|
Awst 2014
|
1.2
|
1.2
|
1.2
|
1.1
|
1.2
|
Medi 2014
|
0.1
|
0.2
|
-0.2
|
0.0
|
0.5
|
Hydref 2014
|
-0.2
|
0.1
|
0.1
|
-0.5
|
-0.2
|
Tachwedd 2014
|
-0.3
|
-0.2
|
-0.2
|
-0.4
|
-0.5
|
Rhagfyr 2014
|
0.2
|
0.1
|
0.0
|
0.3
|
0.6
|
Ionawr 2015
|
-0.5
|
-0.3
|
-0.4
|
-0.6
|
-1.1
|
Chwefror 2015
|
0.1
|
0.2
|
-0.1
|
0.2
|
0.1
|
Mawrth 2015
|
0.4
|
1.0
|
0.4
|
-0.2
|
0.4
|
Ebrill 2015
|
0.9
|
-0.1
|
1.0
|
1.8
|
0.7
|
Mai 2015
|
1.1
|
0.6
|
1.3
|
0.9
|
1.6
|
Mehefin 2015
|
0.8
|
0.9
|
0.8
|
1.3
|
-0.2
|
Gorffennaf 2015
|
1.7
|
1.8
|
1.5
|
1.4
|
2.3
|
Awst 2015
|
0.9
|
1.2
|
0.8
|
0.9
|
0.6
|
Medi 2015
|
0.2
|
0.8
|
-0.2
|
-0.1
|
0.5
|
Hydref 2015
|
0.1
|
-0.2
|
0.5
|
0.4
|
-0.3
|
Tachwedd 2015
|
0.8
|
0.8
|
0.7
|
0.6
|
1.1
|
Rhagfyr 2015
|
0.3
|
0.5
|
0.3
|
0.4
|
0.2
|
Ionawr 2016
|
0.3
|
-0.2
|
0.6
|
0.0
|
0.8
|
Chwefror 2016
|
0.0
|
0.4
|
-0.6
|
0.2
|
0.1
|
Mawrth 2016
|
1.0
|
1.6
|
0.4
|
0.6
|
1.8
|
Ebrill 2016
|
0.4
|
-1.1
|
1.6
|
1.4
|
-1.0
|
Mai 2016
|
1.2
|
0.3
|
0.8
|
1.2
|
2.6
|
Mehefin 2016
|
1.0
|
2.2
|
0.9
|
0.7
|
-0.1
|
Gorffennaf 2016
|
1.0
|
0.5
|
1.2
|
1.2
|
1.3
|
Awst 2016
|
0.0
|
0.4
|
0.0
|
-0.2
|
-0.2
|
Medi 2016
|
-0.2
|
0.2
|
-0.1
|
-0.6
|
-0.1
|
Hydref 2016
|
-0.3
|
0.1
|
-0.4
|
-0.9
|
0.1
|
Tachwedd 2016
|
0.5
|
0.8
|
0.4
|
0.3
|
0.5
|
Rhagfyr 2016
|
0.2
|
-0.2
|
0.1
|
0.6
|
0.1
|
Ionawr 2017
|
-0.1
|
0.1
|
-0.1
|
-0.4
|
0.1
|
Chwefror 2017
|
0.2
|
-0.1
|
-0.2
|
0.2
|
1.1
|
Mawrth 2017
|
-0.2
|
0.2
|
0.1
|
-0.3
|
-1.0
|
Ebrill 2017
|
1.6
|
1.3
|
1.4
|
1.8
|
1.9
|
Mai 2017
|
0.6
|
-0.3
|
1.0
|
0.5
|
1.3
|
Mehefin 2017
|
0.8
|
1.0
|
0.6
|
1.3
|
0.3
|
Gorffennaf 2017
|
1.3
|
1.4
|
1.4
|
1.1
|
1.5
|
Awst 2017
|
0.4
|
0.4
|
0.4
|
1.0
|
-0.2
|
Medi 2017
|
-0.4
|
0.4
|
-0.2
|
-0.6
|
-1.0
|
Hydref 2017
|
0.1
|
0.1
|
0.5
|
-0.1
|
-0.2
|
Tachwedd 2017
|
-0.3
|
-0.5
|
-0.3
|
-0.3
|
0.1
|
Rhagfyr 2017
|
0.4
|
0.3
|
0.5
|
0.8
|
-0.2
|
Ionawr 2018
|
-0.4
|
0.1
|
-0.4
|
-1.0
|
0.1
|
Chwefror 2018
|
0.3
|
0.6
|
0.0
|
0.4
|
-0.1
|
Mawrth 2018
|
-0.6
|
-0.7
|
-0.2
|
-0.2
|
-1.6
|
Ebrill 2018
|
1.0
|
0.4
|
1.1
|
1.3
|
1.1
|
Mai 2018
|
0.4
|
0.5
|
0.4
|
0.3
|
0.4
|
Dyddiad
|
Pob math o eiddo
|
Tai ar wahân
|
Tai pâr
|
Tai teras
|
Fflatiau a fflatiau deulawr
|
Ebrill 1998
|
36.6
|
|
|
|
|
Mai 1998
|
36.6
|
|
|
|
|
Mehefin 1998
|
36.6
|
|
|
|
|
Gorffennaf 1998
|
38.2
|
|
|
|
|
Awst 1998
|
38.2
|
|
|
|
|
Medi 1998
|
38.2
|
|
|
|
|
Hydref 1998
|
38.0
|
|
|
|
|
Tachwedd 1998
|
38.0
|
|
|
|
|
Rhagfyr 1998
|
38.0
|
|
|
|
|
Ionawr 1999
|
38.2
|
|
|
|
|
Chwefror 1999
|
38.2
|
|
|
|
|
Mawrth 1999
|
38.2
|
|
|
|
|
Ebrill 1999
|
39.9
|
|
|
|
|
Mai 1999
|
39.9
|
|
|
|
|
Mehefin 1999
|
39.9
|
|
|
|
|
Gorffennaf 1999
|
42.2
|
|
|
|
|
Awst 1999
|
42.2
|
|
|
|
|
Medi 1999
|
42.2
|
|
|
|
|
Hydref 1999
|
43.3
|
|
|
|
|
Tachwedd 1999
|
43.3
|
|
|
|
|
Rhagfyr 1999
|
43.3
|
|
|
|
|
Ionawr 2000
|
44.4
|
|
|
|
|
Chwefror 2000
|
44.4
|
|
|
|
|
Mawrth 2000
|
44.4
|
|
|
|
|
Ebrill 2000
|
46.8
|
|
|
|
|
Mai 2000
|
46.8
|
|
|
|
|
Mehefin 2000
|
46.8
|
|
|
|
|
Gorffennaf 2000
|
47.7
|
|
|
|
|
Awst 2000
|
47.7
|
|
|
|
|
Medi 2000
|
47.7
|
|
|
|
|
Hydref 2000
|
49.1
|
|
|
|
|
Tachwedd 2000
|
49.1
|
|
|
|
|
Rhagfyr 2000
|
49.1
|
|
|
|
|
Ionawr 2001
|
48.8
|
|
|
|
|
Chwefror 2001
|
48.8
|
|
|
|
|
Mawrth 2001
|
48.8
|
|
|
|
|
Ebrill 2001
|
50.6
|
|
|
|
|
Mai 2001
|
50.6
|
|
|
|
|
Mehefin 2001
|
50.6
|
|
|
|
|
Gorffennaf 2001
|
52.4
|
|
|
|
|
Awst 2001
|
52.4
|
|
|
|
|
Medi 2001
|
52.4
|
|
|
|
|
Hydref 2001
|
51.4
|
|
|
|
|
Tachwedd 2001
|
51.4
|
|
|
|
|
Rhagfyr 2001
|
51.4
|
|
|
|
|
Ionawr 2002
|
51.2
|
|
|
|
|
Chwefror 2002
|
53.1
|
|
|
|
|
Mawrth 2002
|
54.9
|
|
|
|
|
Ebrill 2002
|
55.7
|
|
|
|
|
Mai 2002
|
57.1
|
|
|
|
|
Mehefin 2002
|
59.4
|
|
|
|
|
Gorffennaf 2002
|
59.9
|
|
|
|
|
Awst 2002
|
61.2
|
|
|
|
|
Medi 2002
|
62.7
|
|
|
|
|
Hydref 2002
|
63.2
|
|
|
|
|
Tachwedd 2002
|
63.8
|
|
|
|
|
Rhagfyr 2002
|
66.0
|
|
|
|
|
Ionawr 2003
|
65.5
|
|
|
|
|
Chwefror 2003
|
64.8
|
|
|
|
|
Mawrth 2003
|
66.2
|
|
|
|
|
Ebrill 2003
|
67.8
|
|
|
|
|
Mai 2003
|
67.3
|
|
|
|
|
Mehefin 2003
|
67.4
|
|
|
|
|
Gorffennaf 2003
|
68.6
|
|
|
|
|
Awst 2003
|
69.8
|
|
|
|
|
Medi 2003
|
69.6
|
|
|
|
|
Hydref 2003
|
70.8
|
|
|
|
|
Tachwedd 2003
|
70.0
|
|
|
|
|
Rhagfyr 2003
|
71.4
|
|
|
|
|
Ionawr 2004
|
71.8
|
|
|
|
|
Chwefror 2004
|
71.2
|
|
|
|
|
Mawrth 2004
|
71.3
|
|
|
|
|
Ebrill 2004
|
74.6
|
|
|
|
|
Mai 2004
|
75.4
|
|
|
|
|
Mehefin 2004
|
76.8
|
|
|
|
|
Gorffennaf 2004
|
78.4
|
|
|
|
|
Awst 2004
|
79.3
|
|
|
|
|
Medi 2004
|
79.2
|
|
|
|
|
Hydref 2004
|
79.8
|
|
|
|
|
Tachwedd 2004
|
79.6
|
|
|
|
|
Rhagfyr 2004
|
79.1
|
|
|
|
|
Ionawr 2005
|
79.0
|
82.1
|
81.6
|
77.5
|
73.8
|
Chwefror 2005
|
78.9
|
81.5
|
82.0
|
77.3
|
73.8
|
Mawrth 2005
|
79.6
|
81.7
|
82.4
|
78.3
|
74.6
|
Ebrill 2005
|
80.7
|
82.1
|
83.7
|
79.6
|
75.8
|
Mai 2005
|
81.6
|
83.6
|
84.2
|
80.4
|
76.6
|
Mehefin 2005
|
82.2
|
83.1
|
84.8
|
81.7
|
77.3
|
Gorffennaf 2005
|
83.3
|
84.8
|
86.3
|
82.5
|
77.7
|
Awst 2005
|
83.6
|
85.7
|
86.1
|
82.9
|
78.2
|
Medi 2005
|
83.5
|
85.1
|
85.9
|
83.2
|
77.8
|
Hydref 2005
|
83.3
|
85.0
|
86.0
|
82.8
|
77.6
|
Tachwedd 2005
|
83.6
|
85.1
|
86.2
|
83.1
|
77.9
|
Rhagfyr 2005
|
84.0
|
84.2
|
86.1
|
84.0
|
79.5
|
Ionawr 2006
|
83.9
|
85.1
|
86.2
|
83.5
|
79.0
|
Chwefror 2006
|
84.0
|
84.5
|
86.2
|
83.7
|
79.7
|
Mawrth 2006
|
84.7
|
85.5
|
87.0
|
84.4
|
80.0
|
Ebrill 2006
|
86.6
|
86.7
|
89.0
|
86.7
|
81.5
|
Mai 2006
|
87.4
|
87.8
|
89.6
|
87.1
|
83.0
|
Mehefin 2006
|
88.2
|
87.8
|
90.4
|
88.5
|
83.7
|
Gorffennaf 2006
|
89.5
|
89.8
|
91.7
|
90.1
|
83.9
|
Awst 2006
|
90.2
|
91.0
|
92.4
|
90.6
|
84.7
|
Medi 2006
|
90.6
|
91.2
|
92.8
|
90.8
|
85.3
|
Hydref 2006
|
91.1
|
91.6
|
93.3
|
91.5
|
85.8
|
Tachwedd 2006
|
91.6
|
92.2
|
94.0
|
92.0
|
85.8
|
Rhagfyr 2006
|
92.7
|
92.1
|
94.7
|
93.6
|
87.9
|
Ionawr 2007
|
92.7
|
93.2
|
94.8
|
93.3
|
87.5
|
Chwefror 2007
|
93.0
|
93.0
|
95.0
|
93.2
|
88.7
|
Mawrth 2007
|
93.7
|
93.6
|
95.6
|
94.6
|
88.8
|
Ebrill 2007
|
95.6
|
95.1
|
97.3
|
96.7
|
90.9
|
Mai 2007
|
96.7
|
95.9
|
98.2
|
97.4
|
92.9
|
Mehefin 2007
|
97.7
|
97.0
|
99.2
|
98.6
|
93.7
|
Gorffennaf 2007
|
99.0
|
99.3
|
100.3
|
99.7
|
94.4
|
Awst 2007
|
99.5
|
100.1
|
100.9
|
100.4
|
94.6
|
Medi 2007
|
99.7
|
100.2
|
100.8
|
100.2
|
95.4
|
Hydref 2007
|
99.4
|
100.2
|
100.5
|
100.0
|
95.2
|
Tachwedd 2007
|
99.4
|
100.3
|
100.6
|
99.6
|
95.2
|
Rhagfyr 2007
|
99.2
|
99.1
|
100.3
|
99.8
|
95.6
|
Ionawr 2008
|
97.4
|
97.4
|
98.2
|
97.7
|
95.6
|
Chwefror 2008
|
96.6
|
96.3
|
97.7
|
96.9
|
94.7
|
Mawrth 2008
|
95.9
|
95.2
|
97.3
|
96.6
|
93.4
|
Ebrill 2008
|
96.1
|
95.7
|
97.0
|
96.9
|
93.5
|
Mai 2008
|
96.6
|
95.8
|
98.0
|
97.2
|
94.5
|
Mehefin 2008
|
95.4
|
94.5
|
96.7
|
96.2
|
92.9
|
Gorffennaf 2008
|
94.3
|
94.1
|
95.6
|
94.8
|
91.9
|
Awst 2008
|
92.4
|
92.6
|
93.5
|
92.7
|
89.9
|
Medi 2008
|
90.0
|
91.1
|
90.7
|
90.1
|
87.7
|
Hydref 2008
|
88.2
|
88.8
|
89.2
|
88.2
|
86.0
|
Tachwedd 2008
|
85.7
|
86.0
|
87.1
|
85.8
|
83.3
|
Rhagfyr 2008
|
84.4
|
84.4
|
85.6
|
85.3
|
81.5
|
Ionawr 2009
|
82.5
|
83.8
|
83.2
|
82.2
|
80.0
|
Chwefror 2009
|
81.5
|
81.8
|
82.7
|
81.4
|
79.4
|
Mawrth 2009
|
81.0
|
81.5
|
81.7
|
81.0
|
79.3
|
Ebrill 2009
|
81.7
|
81.8
|
83.1
|
82.1
|
79.0
|
Mai 2009
|
82.9
|
83.0
|
84.1
|
83.2
|
80.4
|
Mehefin 2009
|
83.7
|
84.1
|
84.7
|
84.2
|
80.8
|
Gorffennaf 2009
|
85.2
|
85.8
|
86.4
|
85.8
|
81.6
|
Awst 2009
|
86.0
|
86.9
|
87.4
|
86.6
|
82.0
|
Medi 2009
|
86.7
|
87.4
|
87.8
|
87.3
|
83.3
|
Hydref 2009
|
87.3
|
88.2
|
88.9
|
87.8
|
82.9
|
Tachwedd 2009
|
87.6
|
88.9
|
88.7
|
88.4
|
83.1
|
Rhagfyr 2009
|
88.2
|
87.9
|
89.9
|
89.6
|
83.7
|
Ionawr 2010
|
87.8
|
90.0
|
89.2
|
88.2
|
82.7
|
Chwefror 2010
|
88.0
|
89.8
|
89.8
|
88.5
|
82.7
|
Mawrth 2010
|
88.0
|
89.7
|
89.3
|
88.3
|
83.8
|
Ebrill 2010
|
89.2
|
90.4
|
90.9
|
89.7
|
84.5
|
Mai 2010
|
89.6
|
91.3
|
91.0
|
90.1
|
84.9
|
Mehefin 2010
|
90.0
|
91.2
|
91.5
|
90.9
|
85.3
|
Gorffennaf 2010
|
91.0
|
93.3
|
92.3
|
91.4
|
85.5
|
Awst 2010
|
91.0
|
93.4
|
92.9
|
91.0
|
85.2
|
Medi 2010
|
90.7
|
93.2
|
92.0
|
91.1
|
85.4
|
Hydref 2010
|
89.7
|
92.2
|
91.3
|
89.8
|
84.3
|
Tachwedd 2010
|
88.6
|
91.6
|
90.2
|
88.2
|
83.4
|
Rhagfyr 2010
|
88.5
|
90.5
|
90.0
|
88.6
|
83.6
|
Ionawr 2011
|
87.8
|
90.7
|
88.8
|
87.4
|
83.3
|
Chwefror 2011
|
87.3
|
90.0
|
88.3
|
87.0
|
83.0
|
Mawrth 2011
|
86.9
|
89.7
|
87.6
|
86.6
|
82.9
|
Ebrill 2011
|
88.2
|
90.3
|
89.0
|
88.3
|
84.6
|
Mai 2011
|
87.8
|
89.6
|
89.1
|
87.6
|
84.3
|
Mehefin 2011
|
88.0
|
89.3
|
89.4
|
88.1
|
84.3
|
Gorffennaf 2011
|
89.1
|
90.8
|
90.0
|
89.0
|
85.8
|
Awst 2011
|
89.1
|
91.6
|
90.6
|
89.0
|
84.3
|
Medi 2011
|
88.9
|
91.4
|
90.0
|
88.9
|
84.4
|
Hydref 2011
|
87.9
|
90.7
|
89.4
|
87.5
|
83.2
|
Tachwedd 2011
|
88.0
|
90.3
|
89.3
|
87.3
|
84.2
|
Rhagfyr 2011
|
87.6
|
89.3
|
89.1
|
87.4
|
83.7
|
Ionawr 2012
|
87.0
|
89.1
|
88.6
|
86.7
|
82.6
|
Chwefror 2012
|
86.8
|
88.9
|
88.3
|
86.8
|
81.9
|
Mawrth 2012
|
87.0
|
87.8
|
88.6
|
87.6
|
83.1
|
Ebrill 2012
|
88.0
|
89.9
|
89.1
|
87.8
|
84.5
|
Mai 2012
|
88.3
|
89.8
|
89.5
|
88.3
|
84.9
|
Mehefin 2012
|
89.2
|
90.0
|
90.1
|
90.1
|
85.6
|
Gorffennaf 2012
|
89.5
|
91.2
|
90.4
|
89.8
|
85.8
|
Awst 2012
|
89.6
|
91.0
|
90.8
|
90.3
|
85.2
|
Medi 2012
|
89.3
|
90.8
|
90.2
|
89.9
|
85.4
|
Hydref 2012
|
88.7
|
90.0
|
89.7
|
88.9
|
85.3
|
Tachwedd 2012
|
88.8
|
90.2
|
89.9
|
89.3
|
84.6
|
Rhagfyr 2012
|
88.6
|
89.8
|
89.5
|
89.1
|
84.9
|
Ionawr 2013
|
88.0
|
89.4
|
89.4
|
88.0
|
84.4
|
Chwefror 2013
|
88.0
|
89.2
|
89.0
|
88.3
|
84.4
|
Mawrth 2013
|
88.5
|
90.1
|
89.4
|
88.6
|
85.0
|
Ebrill 2013
|
89.3
|
90.5
|
90.1
|
89.6
|
86.4
|
Mai 2013
|
89.8
|
90.5
|
90.7
|
90.2
|
87.1
|
Mehefin 2013
|
90.6
|
91.2
|
91.4
|
91.3
|
87.6
|
Gorffennaf 2013
|
91.6
|
92.4
|
92.2
|
92.0
|
89.0
|
Awst 2013
|
92.3
|
93.1
|
93.2
|
92.8
|
89.3
|
Medi 2013
|
92.4
|
93.6
|
92.7
|
92.7
|
89.8
|
Hydref 2013
|
92.0
|
93.5
|
92.6
|
91.8
|
89.5
|
Tachwedd 2013
|
92.5
|
93.3
|
93.4
|
92.6
|
90.2
|
Rhagfyr 2013
|
93.3
|
93.2
|
94.1
|
93.6
|
92.1
|
Ionawr 2014
|
93.4
|
94.1
|
93.6
|
93.5
|
92.8
|
Chwefror 2014
|
93.8
|
94.4
|
94.2
|
93.9
|
93.0
|
Mawrth 2014
|
94.2
|
94.1
|
94.6
|
94.4
|
93.8
|
Ebrill 2014
|
96.3
|
96.1
|
96.4
|
96.7
|
95.9
|
Mai 2014
|
97.3
|
96.7
|
97.4
|
97.8
|
97.5
|
Mehefin 2014
|
98.1
|
97.4
|
98.4
|
98.6
|
98.4
|
Gorffennaf 2014
|
99.5
|
99.0
|
99.4
|
100.1
|
99.6
|
Awst 2014
|
100.7
|
100.2
|
100.7
|
101.2
|
100.8
|
Medi 2014
|
100.8
|
100.4
|
100.5
|
101.2
|
101.2
|
Hydref 2014
|
100.6
|
100.5
|
100.6
|
100.7
|
101.0
|
Tachwedd 2014
|
100.3
|
100.2
|
100.4
|
100.3
|
100.5
|
Rhagfyr 2014
|
100.5
|
100.3
|
100.4
|
100.6
|
101.1
|
Ionawr 2015
|
100.0
|
100.0
|
100.0
|
100.0
|
100.0
|
Chwefror 2015
|
100.1
|
100.2
|
99.9
|
100.2
|
100.0
|
Mawrth 2015
|
100.5
|
101.2
|
100.4
|
100.0
|
100.4
|
Ebrill 2015
|
101.3
|
101.1
|
101.4
|
101.7
|
101.1
|
Mai 2015
|
102.4
|
101.8
|
102.6
|
102.6
|
102.7
|
Mehefin 2015
|
103.2
|
102.6
|
103.5
|
103.9
|
102.5
|
Gorffennaf 2015
|
105.0
|
104.4
|
105.1
|
105.4
|
104.9
|
Awst 2015
|
105.9
|
105.7
|
106.0
|
106.3
|
105.6
|
Medi 2015
|
106.2
|
106.5
|
105.8
|
106.2
|
106.1
|
Hydref 2015
|
106.3
|
106.2
|
106.4
|
106.6
|
105.8
|
Tachwedd 2015
|
107.1
|
107.1
|
107.1
|
107.2
|
107.0
|
Rhagfyr 2015
|
107.5
|
107.6
|
107.4
|
107.6
|
107.2
|
Ionawr 2016
|
107.8
|
107.4
|
108.0
|
107.7
|
108.1
|
Chwefror 2016
|
107.8
|
107.8
|
107.4
|
107.9
|
108.2
|
Mawrth 2016
|
108.9
|
109.5
|
107.8
|
108.6
|
110.3
|
Ebrill 2016
|
109.3
|
108.3
|
109.5
|
110.1
|
109.1
|
Mai 2016
|
110.6
|
108.7
|
110.4
|
111.4
|
112.0
|
Mehefin 2016
|
111.6
|
111.1
|
111.4
|
112.2
|
111.8
|
Gorffennaf 2016
|
112.8
|
111.7
|
112.7
|
113.6
|
113.2
|
Awst 2016
|
112.8
|
112.1
|
112.7
|
113.4
|
113.0
|
Medi 2016
|
112.7
|
112.3
|
112.7
|
112.8
|
112.9
|
Hydref 2016
|
112.3
|
112.4
|
112.3
|
111.8
|
113.0
|
Tachwedd 2016
|
112.8
|
113.3
|
112.6
|
112.1
|
113.6
|
Rhagfyr 2016
|
113.0
|
113.0
|
112.8
|
112.8
|
113.8
|
Ionawr 2017
|
112.9
|
113.2
|
112.6
|
112.2
|
113.9
|
Chwefror 2017
|
113.1
|
113.0
|
112.5
|
112.5
|
115.1
|
Mawrth 2017
|
112.9
|
113.3
|
112.6
|
112.1
|
114.0
|
Ebrill 2017
|
114.7
|
114.7
|
114.2
|
114.1
|
116.2
|
Mai 2017
|
115.4
|
114.3
|
115.3
|
114.6
|
117.7
|
Mehefin 2017
|
116.4
|
115.5
|
116.0
|
116.2
|
118.1
|
Gorffennaf 2017
|
117.9
|
117.1
|
117.6
|
117.4
|
119.9
|
Awst 2017
|
118.4
|
117.6
|
118.0
|
118.5
|
119.7
|
Medi 2017
|
118.0
|
118.0
|
117.8
|
117.7
|
118.5
|
Hydref 2017
|
118.1
|
118.2
|
118.4
|
117.6
|
118.2
|
Tachwedd 2017
|
117.7
|
117.6
|
118.0
|
117.3
|
118.2
|
Rhagfyr 2017
|
118.2
|
117.9
|
118.6
|
118.2
|
118.0
|
Ionawr 2018
|
117.8
|
118.1
|
118.1
|
117.0
|
118.2
|
Chwefror 2018
|
118.1
|
118.7
|
118.1
|
117.5
|
118.1
|
Mawrth 2018
|
117.4
|
117.9
|
117.9
|
117.3
|
116.2
|
Ebrill 2018
|
118.5
|
118.4
|
119.1
|
118.8
|
117.4
|
Mai 2018
|
119.0
|
119.0
|
119.6
|
119.2
|
117.8
|
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
Dyddiad
|
Prynwyr am y tro cyntaf
|
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
|
|
Chwefror 2013
|
|
Mawrth 2013
|
|
Ebrill 2013
|
|
Mai 2013
|
|
Mehefin 2013
|
|
Gorffennaf 2013
|
|
Awst 2013
|
|
Medi 2013
|
|
Hydref 2013
|
|
Tachwedd 2013
|
|
Rhagfyr 2013
|
|
Ionawr 2014
|
|
Chwefror 2014
|
|
Mawrth 2014
|
|
Ebrill 2014
|
|
Mai 2014
|
|
Mehefin 2014
|
|
Gorffennaf 2014
|
|
Awst 2014
|
|
Medi 2014
|
|
Hydref 2014
|
|
Tachwedd 2014
|
|
Rhagfyr 2014
|
|
Ionawr 2015
|
|
Chwefror 2015
|
|
Mawrth 2015
|
|
Ebrill 2015
|
|
Mai 2015
|
|
Mehefin 2015
|
|
Gorffennaf 2015
|
|
Awst 2015
|
|
Medi 2015
|
|
Hydref 2015
|
|
Tachwedd 2015
|
|
Rhagfyr 2015
|
|
Ionawr 2016
|
|
Chwefror 2016
|
|
Mawrth 2016
|
|
Ebrill 2016
|
|
Mai 2016
|
|
Mehefin 2016
|
|
Gorffennaf 2016
|
|
Awst 2016
|
|
Medi 2016
|
|
Hydref 2016
|
|
Tachwedd 2016
|
|
Rhagfyr 2016
|
|
Ionawr 2017
|
|
Chwefror 2017
|
|
Mawrth 2017
|
|
Ebrill 2017
|
|
Mai 2017
|
|
Mehefin 2017
|
|
Gorffennaf 2017
|
|
Awst 2017
|
|
Medi 2017
|
|
Hydref 2017
|
|
Tachwedd 2017
|
|
Rhagfyr 2017
|
|
Ionawr 2018
|
|
Chwefror 2018
|
|
Mawrth 2018
|
|
Ebrill 2018
|
|
Mai 2018
|
|
Dyddiad
|
Prynwyr am y tro cyntaf
|
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
|
|
Chwefror 2013
|
|
Mawrth 2013
|
|
Ebrill 2013
|
|
Mai 2013
|
|
Mehefin 2013
|
|
Gorffennaf 2013
|
|
Awst 2013
|
|
Medi 2013
|
|
Hydref 2013
|
|
Tachwedd 2013
|
|
Rhagfyr 2013
|
|
Ionawr 2014
|
|
Chwefror 2014
|
|
Mawrth 2014
|
|
Ebrill 2014
|
|
Mai 2014
|
|
Mehefin 2014
|
|
Gorffennaf 2014
|
|
Awst 2014
|
|
Medi 2014
|
|
Hydref 2014
|
|
Tachwedd 2014
|
|
Rhagfyr 2014
|
|
Ionawr 2015
|
|
Chwefror 2015
|
|
Mawrth 2015
|
|
Ebrill 2015
|
|
Mai 2015
|
|
Mehefin 2015
|
|
Gorffennaf 2015
|
|
Awst 2015
|
|
Medi 2015
|
|
Hydref 2015
|
|
Tachwedd 2015
|
|
Rhagfyr 2015
|
|
Ionawr 2016
|
|
Chwefror 2016
|
|
Mawrth 2016
|
|
Ebrill 2016
|
|
Mai 2016
|
|
Mehefin 2016
|
|
Gorffennaf 2016
|
|
Awst 2016
|
|
Medi 2016
|
|
Hydref 2016
|
|
Tachwedd 2016
|
|
Rhagfyr 2016
|
|
Ionawr 2017
|
|
Chwefror 2017
|
|
Mawrth 2017
|
|
Ebrill 2017
|
|
Mai 2017
|
|
Mehefin 2017
|
|
Gorffennaf 2017
|
|
Awst 2017
|
|
Medi 2017
|
|
Hydref 2017
|
|
Tachwedd 2017
|
|
Rhagfyr 2017
|
|
Ionawr 2018
|
|
Chwefror 2018
|
|
Mawrth 2018
|
|
Ebrill 2018
|
|
Mai 2018
|
|
Dyddiad
|
Prynwyr am y tro cyntaf
|
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
|
|
Chwefror 2013
|
|
Mawrth 2013
|
|
Ebrill 2013
|
|
Mai 2013
|
|
Mehefin 2013
|
|
Gorffennaf 2013
|
|
Awst 2013
|
|
Medi 2013
|
|
Hydref 2013
|
|
Tachwedd 2013
|
|
Rhagfyr 2013
|
|
Ionawr 2014
|
|
Chwefror 2014
|
|
Mawrth 2014
|
|
Ebrill 2014
|
|
Mai 2014
|
|
Mehefin 2014
|
|
Gorffennaf 2014
|
|
Awst 2014
|
|
Medi 2014
|
|
Hydref 2014
|
|
Tachwedd 2014
|
|
Rhagfyr 2014
|
|
Ionawr 2015
|
|
Chwefror 2015
|
|
Mawrth 2015
|
|
Ebrill 2015
|
|
Mai 2015
|
|
Mehefin 2015
|
|
Gorffennaf 2015
|
|
Awst 2015
|
|
Medi 2015
|
|
Hydref 2015
|
|
Tachwedd 2015
|
|
Rhagfyr 2015
|
|
Ionawr 2016
|
|
Chwefror 2016
|
|
Mawrth 2016
|
|
Ebrill 2016
|
|
Mai 2016
|
|
Mehefin 2016
|
|
Gorffennaf 2016
|
|
Awst 2016
|
|
Medi 2016
|
|
Hydref 2016
|
|
Tachwedd 2016
|
|
Rhagfyr 2016
|
|
Ionawr 2017
|
|
Chwefror 2017
|
|
Mawrth 2017
|
|
Ebrill 2017
|
|
Mai 2017
|
|
Mehefin 2017
|
|
Gorffennaf 2017
|
|
Awst 2017
|
|
Medi 2017
|
|
Hydref 2017
|
|
Tachwedd 2017
|
|
Rhagfyr 2017
|
|
Ionawr 2018
|
|
Chwefror 2018
|
|
Mawrth 2018
|
|
Ebrill 2018
|
|
Mai 2018
|
|
Dyddiad
|
Prynwyr am y tro cyntaf
|
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
|
|
Chwefror 2013
|
|
Mawrth 2013
|
|
Ebrill 2013
|
|
Mai 2013
|
|
Mehefin 2013
|
|
Gorffennaf 2013
|
|
Awst 2013
|
|
Medi 2013
|
|
Hydref 2013
|
|
Tachwedd 2013
|
|
Rhagfyr 2013
|
|
Ionawr 2014
|
|
Chwefror 2014
|
|
Mawrth 2014
|
|
Ebrill 2014
|
|
Mai 2014
|
|
Mehefin 2014
|
|
Gorffennaf 2014
|
|
Awst 2014
|
|
Medi 2014
|
|
Hydref 2014
|
|
Tachwedd 2014
|
|
Rhagfyr 2014
|
|
Ionawr 2015
|
|
Chwefror 2015
|
|
Mawrth 2015
|
|
Ebrill 2015
|
|
Mai 2015
|
|
Mehefin 2015
|
|
Gorffennaf 2015
|
|
Awst 2015
|
|
Medi 2015
|
|
Hydref 2015
|
|
Tachwedd 2015
|
|
Rhagfyr 2015
|
|
Ionawr 2016
|
|
Chwefror 2016
|
|
Mawrth 2016
|
|
Ebrill 2016
|
|
Mai 2016
|
|
Mehefin 2016
|
|
Gorffennaf 2016
|
|
Awst 2016
|
|
Medi 2016
|
|
Hydref 2016
|
|
Tachwedd 2016
|
|
Rhagfyr 2016
|
|
Ionawr 2017
|
|
Chwefror 2017
|
|
Mawrth 2017
|
|
Ebrill 2017
|
|
Mai 2017
|
|
Mehefin 2017
|
|
Gorffennaf 2017
|
|
Awst 2017
|
|
Medi 2017
|
|
Hydref 2017
|
|
Tachwedd 2017
|
|
Rhagfyr 2017
|
|
Ionawr 2018
|
|
Chwefror 2018
|
|
Mawrth 2018
|
|
Ebrill 2018
|
|
Mai 2018
|
|
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
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
Dyddiad
|
Eiddo presennol
|
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
|
148104.0
|
Chwefror 2005
|
147760.0
|
Mawrth 2005
|
148971.0
|
Ebrill 2005
|
150952.0
|
Mai 2005
|
152737.0
|
Mehefin 2005
|
154044.0
|
Gorffennaf 2005
|
156091.0
|
Awst 2005
|
156649.0
|
Medi 2005
|
156461.0
|
Hydref 2005
|
155964.0
|
Tachwedd 2005
|
156371.0
|
Rhagfyr 2005
|
157163.0
|
Ionawr 2006
|
157201.0
|
Chwefror 2006
|
157153.0
|
Mawrth 2006
|
158632.0
|
Ebrill 2006
|
162086.0
|
Mai 2006
|
163666.0
|
Mehefin 2006
|
165385.0
|
Gorffennaf 2006
|
167921.0
|
Awst 2006
|
169537.0
|
Medi 2006
|
170022.0
|
Hydref 2006
|
171010.0
|
Tachwedd 2006
|
172091.0
|
Rhagfyr 2006
|
174039.0
|
Ionawr 2007
|
174069.0
|
Chwefror 2007
|
174567.0
|
Mawrth 2007
|
176105.0
|
Ebrill 2007
|
179654.0
|
Mai 2007
|
181401.0
|
Mehefin 2007
|
183651.0
|
Gorffennaf 2007
|
185816.0
|
Awst 2007
|
187321.0
|
Medi 2007
|
187405.0
|
Hydref 2007
|
186925.0
|
Tachwedd 2007
|
186893.0
|
Rhagfyr 2007
|
186442.0
|
Ionawr 2008
|
182943.0
|
Chwefror 2008
|
180878.0
|
Mawrth 2008
|
179806.0
|
Ebrill 2008
|
180076.0
|
Mai 2008
|
181264.0
|
Mehefin 2008
|
178956.0
|
Gorffennaf 2008
|
177187.0
|
Awst 2008
|
173838.0
|
Medi 2008
|
169162.0
|
Hydref 2008
|
165744.0
|
Tachwedd 2008
|
160990.0
|
Rhagfyr 2008
|
158901.0
|
Ionawr 2009
|
154675.0
|
Chwefror 2009
|
152812.0
|
Mawrth 2009
|
151744.0
|
Ebrill 2009
|
153300.0
|
Mai 2009
|
155637.0
|
Mehefin 2009
|
157301.0
|
Gorffennaf 2009
|
160247.0
|
Awst 2009
|
162036.0
|
Medi 2009
|
163066.0
|
Hydref 2009
|
164386.0
|
Tachwedd 2009
|
164983.0
|
Rhagfyr 2009
|
166101.0
|
Ionawr 2010
|
166116.0
|
Chwefror 2010
|
165918.0
|
Mawrth 2010
|
165811.0
|
Ebrill 2010
|
168232.0
|
Mai 2010
|
169102.0
|
Mehefin 2010
|
169924.0
|
Gorffennaf 2010
|
171962.0
|
Awst 2010
|
171694.0
|
Medi 2010
|
171037.0
|
Hydref 2010
|
169037.0
|
Tachwedd 2010
|
167146.0
|
Rhagfyr 2010
|
166496.0
|
Ionawr 2011
|
164992.0
|
Chwefror 2011
|
164131.0
|
Mawrth 2011
|
163175.0
|
Ebrill 2011
|
165855.0
|
Mai 2011
|
164988.0
|
Mehefin 2011
|
165542.0
|
Gorffennaf 2011
|
167512.0
|
Awst 2011
|
167878.0
|
Medi 2011
|
167463.0
|
Hydref 2011
|
165463.0
|
Tachwedd 2011
|
165414.0
|
Rhagfyr 2011
|
164790.0
|
Ionawr 2012
|
163702.0
|
Chwefror 2012
|
163251.0
|
Mawrth 2012
|
163579.0
|
Ebrill 2012
|
165561.0
|
Mai 2012
|
166137.0
|
Mehefin 2012
|
167901.0
|
Gorffennaf 2012
|
168907.0
|
Awst 2012
|
169003.0
|
Medi 2012
|
168248.0
|
Hydref 2012
|
166734.0
|
Tachwedd 2012
|
166774.0
|
Rhagfyr 2012
|
166323.0
|
Ionawr 2013
|
165709.0
|
Chwefror 2013
|
165548.0
|
Mawrth 2013
|
166188.0
|
Ebrill 2013
|
167898.0
|
Mai 2013
|
168916.0
|
Mehefin 2013
|
170386.0
|
Gorffennaf 2013
|
172447.0
|
Awst 2013
|
173864.0
|
Medi 2013
|
173668.0
|
Hydref 2013
|
172928.0
|
Tachwedd 2013
|
173884.0
|
Rhagfyr 2013
|
175242.0
|
Ionawr 2014
|
175785.0
|
Chwefror 2014
|
176293.0
|
Mawrth 2014
|
176939.0
|
Ebrill 2014
|
180885.0
|
Mai 2014
|
182671.0
|
Mehefin 2014
|
184465.0
|
Gorffennaf 2014
|
187256.0
|
Awst 2014
|
189593.0
|
Medi 2014
|
189789.0
|
Hydref 2014
|
189375.0
|
Tachwedd 2014
|
188861.0
|
Rhagfyr 2014
|
188961.0
|
Ionawr 2015
|
188052.0
|
Chwefror 2015
|
188115.0
|
Mawrth 2015
|
188802.0
|
Ebrill 2015
|
190584.0
|
Mai 2015
|
192745.0
|
Mehefin 2015
|
194475.0
|
Gorffennaf 2015
|
197607.0
|
Awst 2015
|
199560.0
|
Medi 2015
|
199939.0
|
Hydref 2015
|
200080.0
|
Tachwedd 2015
|
201687.0
|
Rhagfyr 2015
|
201989.0
|
Ionawr 2016
|
202699.0
|
Chwefror 2016
|
202560.0
|
Mawrth 2016
|
204595.0
|
Ebrill 2016
|
205200.0
|
Mai 2016
|
207357.0
|
Mehefin 2016
|
209853.0
|
Gorffennaf 2016
|
212125.0
|
Awst 2016
|
212210.0
|
Medi 2016
|
211807.0
|
Hydref 2016
|
210810.0
|
Tachwedd 2016
|
211841.0
|
Rhagfyr 2016
|
212221.0
|
Ionawr 2017
|
211679.0
|
Chwefror 2017
|
212272.0
|
Mawrth 2017
|
211795.0
|
Ebrill 2017
|
215277.0
|
Mai 2017
|
216567.0
|
Mehefin 2017
|
218599.0
|
Gorffennaf 2017
|
221342.0
|
Awst 2017
|
222487.0
|
Medi 2017
|
221509.0
|
Hydref 2017
|
221593.0
|
Tachwedd 2017
|
221183.0
|
Rhagfyr 2017
|
221955.0
|
Ionawr 2018
|
220815.0
|
Chwefror 2018
|
220552.0
|
Mawrth 2018
|
220206.0
|
Ebrill 2018
|
222146.0
|
Mai 2018
|
223602.0
|
Dyddiad
|
Eiddo presennol
|
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
|
6.1
|
Chwefror 2006
|
6.4
|
Mawrth 2006
|
6.5
|
Ebrill 2006
|
7.4
|
Mai 2006
|
7.2
|
Mehefin 2006
|
7.4
|
Gorffennaf 2006
|
7.6
|
Awst 2006
|
8.2
|
Medi 2006
|
8.7
|
Hydref 2006
|
9.6
|
Tachwedd 2006
|
10.0
|
Rhagfyr 2006
|
10.7
|
Ionawr 2007
|
10.7
|
Chwefror 2007
|
11.1
|
Mawrth 2007
|
11.0
|
Ebrill 2007
|
10.8
|
Mai 2007
|
10.8
|
Mehefin 2007
|
11.0
|
Gorffennaf 2007
|
10.7
|
Awst 2007
|
10.5
|
Medi 2007
|
10.2
|
Hydref 2007
|
9.3
|
Tachwedd 2007
|
8.6
|
Rhagfyr 2007
|
7.1
|
Ionawr 2008
|
5.1
|
Chwefror 2008
|
3.6
|
Mawrth 2008
|
2.1
|
Ebrill 2008
|
0.2
|
Mai 2008
|
-0.1
|
Mehefin 2008
|
-2.6
|
Gorffennaf 2008
|
-4.6
|
Awst 2008
|
-7.2
|
Medi 2008
|
-9.7
|
Hydref 2008
|
-11.3
|
Tachwedd 2008
|
-13.9
|
Rhagfyr 2008
|
-14.8
|
Ionawr 2009
|
-15.4
|
Chwefror 2009
|
-15.5
|
Mawrth 2009
|
-15.6
|
Ebrill 2009
|
-14.9
|
Mai 2009
|
-14.1
|
Mehefin 2009
|
-12.1
|
Gorffennaf 2009
|
-9.6
|
Awst 2009
|
-6.8
|
Medi 2009
|
-3.6
|
Hydref 2009
|
-0.8
|
Tachwedd 2009
|
2.5
|
Rhagfyr 2009
|
4.5
|
Ionawr 2010
|
7.4
|
Chwefror 2010
|
8.6
|
Mawrth 2010
|
9.3
|
Ebrill 2010
|
9.7
|
Mai 2010
|
8.6
|
Mehefin 2010
|
8.0
|
Gorffennaf 2010
|
7.3
|
Awst 2010
|
6.0
|
Medi 2010
|
4.9
|
Hydref 2010
|
2.8
|
Tachwedd 2010
|
1.3
|
Rhagfyr 2010
|
0.2
|
Ionawr 2011
|
-0.7
|
Chwefror 2011
|
-1.1
|
Mawrth 2011
|
-1.6
|
Ebrill 2011
|
-1.4
|
Mai 2011
|
-2.4
|
Mehefin 2011
|
-2.6
|
Gorffennaf 2011
|
-2.6
|
Awst 2011
|
-2.2
|
Medi 2011
|
-2.1
|
Hydref 2011
|
-2.1
|
Tachwedd 2011
|
-1.0
|
Rhagfyr 2011
|
-1.0
|
Ionawr 2012
|
-0.8
|
Chwefror 2012
|
-0.5
|
Mawrth 2012
|
0.2
|
Ebrill 2012
|
-0.2
|
Mai 2012
|
0.7
|
Mehefin 2012
|
1.4
|
Gorffennaf 2012
|
0.8
|
Awst 2012
|
0.7
|
Medi 2012
|
0.5
|
Hydref 2012
|
0.8
|
Tachwedd 2012
|
0.8
|
Rhagfyr 2012
|
0.9
|
Ionawr 2013
|
1.2
|
Chwefror 2013
|
1.4
|
Mawrth 2013
|
1.6
|
Ebrill 2013
|
1.4
|
Mai 2013
|
1.7
|
Mehefin 2013
|
1.5
|
Gorffennaf 2013
|
2.1
|
Awst 2013
|
2.9
|
Medi 2013
|
3.2
|
Hydref 2013
|
3.7
|
Tachwedd 2013
|
4.3
|
Rhagfyr 2013
|
5.4
|
Ionawr 2014
|
6.1
|
Chwefror 2014
|
6.5
|
Mawrth 2014
|
6.5
|
Ebrill 2014
|
7.7
|
Mai 2014
|
8.1
|
Mehefin 2014
|
8.3
|
Gorffennaf 2014
|
8.6
|
Awst 2014
|
9.0
|
Medi 2014
|
9.3
|
Hydref 2014
|
9.5
|
Tachwedd 2014
|
8.6
|
Rhagfyr 2014
|
7.8
|
Ionawr 2015
|
7.0
|
Chwefror 2015
|
6.7
|
Mawrth 2015
|
6.7
|
Ebrill 2015
|
5.4
|
Mai 2015
|
5.5
|
Mehefin 2015
|
5.4
|
Gorffennaf 2015
|
5.5
|
Awst 2015
|
5.3
|
Medi 2015
|
5.4
|
Hydref 2015
|
5.6
|
Tachwedd 2015
|
6.8
|
Rhagfyr 2015
|
6.9
|
Ionawr 2016
|
7.8
|
Chwefror 2016
|
7.7
|
Mawrth 2016
|
8.4
|
Ebrill 2016
|
7.7
|
Mai 2016
|
7.6
|
Mehefin 2016
|
7.9
|
Gorffennaf 2016
|
7.4
|
Awst 2016
|
6.3
|
Medi 2016
|
5.9
|
Hydref 2016
|
5.4
|
Tachwedd 2016
|
5.0
|
Rhagfyr 2016
|
5.1
|
Ionawr 2017
|
4.4
|
Chwefror 2017
|
4.8
|
Mawrth 2017
|
3.5
|
Ebrill 2017
|
4.9
|
Mai 2017
|
4.4
|
Mehefin 2017
|
4.2
|
Gorffennaf 2017
|
4.3
|
Awst 2017
|
4.8
|
Medi 2017
|
4.6
|
Hydref 2017
|
5.1
|
Tachwedd 2017
|
4.4
|
Rhagfyr 2017
|
4.6
|
Ionawr 2018
|
4.3
|
Chwefror 2018
|
3.9
|
Mawrth 2018
|
4.0
|
Ebrill 2018
|
3.2
|
Mai 2018
|
3.2
|
Dyddiad
|
Eiddo presennol
|
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
|
-0.2
|
Mawrth 2005
|
0.8
|
Ebrill 2005
|
1.3
|
Mai 2005
|
1.2
|
Mehefin 2005
|
0.9
|
Gorffennaf 2005
|
1.3
|
Awst 2005
|
0.4
|
Medi 2005
|
-0.1
|
Hydref 2005
|
-0.3
|
Tachwedd 2005
|
0.3
|
Rhagfyr 2005
|
0.5
|
Ionawr 2006
|
0.0
|
Chwefror 2006
|
-0.0
|
Mawrth 2006
|
0.9
|
Ebrill 2006
|
2.2
|
Mai 2006
|
1.0
|
Mehefin 2006
|
1.0
|
Gorffennaf 2006
|
1.5
|
Awst 2006
|
1.0
|
Medi 2006
|
0.3
|
Hydref 2006
|
0.6
|
Tachwedd 2006
|
0.6
|
Rhagfyr 2006
|
1.1
|
Ionawr 2007
|
0.0
|
Chwefror 2007
|
0.3
|
Mawrth 2007
|
0.9
|
Ebrill 2007
|
2.0
|
Mai 2007
|
1.0
|
Mehefin 2007
|
1.2
|
Gorffennaf 2007
|
1.2
|
Awst 2007
|
0.8
|
Medi 2007
|
0.0
|
Hydref 2007
|
-0.3
|
Tachwedd 2007
|
-0.0
|
Rhagfyr 2007
|
-0.2
|
Ionawr 2008
|
-1.9
|
Chwefror 2008
|
-1.1
|
Mawrth 2008
|
-0.6
|
Ebrill 2008
|
0.2
|
Mai 2008
|
0.7
|
Mehefin 2008
|
-1.3
|
Gorffennaf 2008
|
-1.0
|
Awst 2008
|
-1.9
|
Medi 2008
|
-2.7
|
Hydref 2008
|
-2.0
|
Tachwedd 2008
|
-2.9
|
Rhagfyr 2008
|
-1.3
|
Ionawr 2009
|
-2.7
|
Chwefror 2009
|
-1.2
|
Mawrth 2009
|
-0.7
|
Ebrill 2009
|
1.0
|
Mai 2009
|
1.5
|
Mehefin 2009
|
1.1
|
Gorffennaf 2009
|
1.9
|
Awst 2009
|
1.1
|
Medi 2009
|
0.6
|
Hydref 2009
|
0.8
|
Tachwedd 2009
|
0.4
|
Rhagfyr 2009
|
0.7
|
Ionawr 2010
|
0.0
|
Chwefror 2010
|
-0.1
|
Mawrth 2010
|
-0.1
|
Ebrill 2010
|
1.5
|
Mai 2010
|
0.5
|
Mehefin 2010
|
0.5
|
Gorffennaf 2010
|
1.2
|
Awst 2010
|
-0.2
|
Medi 2010
|
-0.4
|
Hydref 2010
|
-1.2
|
Tachwedd 2010
|
-1.1
|
Rhagfyr 2010
|
-0.4
|
Ionawr 2011
|
-0.9
|
Chwefror 2011
|
-0.5
|
Mawrth 2011
|
-0.6
|
Ebrill 2011
|
1.6
|
Mai 2011
|
-0.5
|
Mehefin 2011
|
0.3
|
Gorffennaf 2011
|
1.2
|
Awst 2011
|
0.2
|
Medi 2011
|
-0.2
|
Hydref 2011
|
-1.2
|
Tachwedd 2011
|
-0.0
|
Rhagfyr 2011
|
-0.4
|
Ionawr 2012
|
-0.7
|
Chwefror 2012
|
-0.3
|
Mawrth 2012
|
0.2
|
Ebrill 2012
|
1.2
|
Mai 2012
|
0.4
|
Mehefin 2012
|
1.1
|
Gorffennaf 2012
|
0.6
|
Awst 2012
|
0.1
|
Medi 2012
|
-0.4
|
Hydref 2012
|
-0.9
|
Tachwedd 2012
|
0.0
|
Rhagfyr 2012
|
-0.3
|
Ionawr 2013
|
-0.4
|
Chwefror 2013
|
-0.1
|
Mawrth 2013
|
0.4
|
Ebrill 2013
|
1.0
|
Mai 2013
|
0.6
|
Mehefin 2013
|
0.9
|
Gorffennaf 2013
|
1.2
|
Awst 2013
|
0.8
|
Medi 2013
|
-0.1
|
Hydref 2013
|
-0.4
|
Tachwedd 2013
|
0.6
|
Rhagfyr 2013
|
0.8
|
Ionawr 2014
|
0.3
|
Chwefror 2014
|
0.3
|
Mawrth 2014
|
0.4
|
Ebrill 2014
|
2.2
|
Mai 2014
|
1.0
|
Mehefin 2014
|
1.0
|
Gorffennaf 2014
|
1.5
|
Awst 2014
|
1.2
|
Medi 2014
|
0.1
|
Hydref 2014
|
-0.2
|
Tachwedd 2014
|
-0.3
|
Rhagfyr 2014
|
0.1
|
Ionawr 2015
|
-0.5
|
Chwefror 2015
|
0.0
|
Mawrth 2015
|
0.4
|
Ebrill 2015
|
0.9
|
Mai 2015
|
1.1
|
Mehefin 2015
|
0.9
|
Gorffennaf 2015
|
1.6
|
Awst 2015
|
1.0
|
Medi 2015
|
0.2
|
Hydref 2015
|
0.1
|
Tachwedd 2015
|
0.8
|
Rhagfyr 2015
|
0.2
|
Ionawr 2016
|
0.4
|
Chwefror 2016
|
-0.1
|
Mawrth 2016
|
1.0
|
Ebrill 2016
|
0.3
|
Mai 2016
|
1.0
|
Mehefin 2016
|
1.2
|
Gorffennaf 2016
|
1.1
|
Awst 2016
|
0.0
|
Medi 2016
|
-0.2
|
Hydref 2016
|
-0.5
|
Tachwedd 2016
|
0.5
|
Rhagfyr 2016
|
0.2
|
Ionawr 2017
|
-0.3
|
Chwefror 2017
|
0.3
|
Mawrth 2017
|
-0.2
|
Ebrill 2017
|
1.6
|
Mai 2017
|
0.6
|
Mehefin 2017
|
0.9
|
Gorffennaf 2017
|
1.2
|
Awst 2017
|
0.5
|
Medi 2017
|
-0.4
|
Hydref 2017
|
0.0
|
Tachwedd 2017
|
-0.2
|
Rhagfyr 2017
|
0.4
|
Ionawr 2018
|
-0.5
|
Chwefror 2018
|
-0.1
|
Mawrth 2018
|
-0.2
|
Ebrill 2018
|
0.9
|
Mai 2018
|
0.7
|
Dyddiad
|
Eiddo presennol
|
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
|
78.8
|
Chwefror 2005
|
78.6
|
Mawrth 2005
|
79.2
|
Ebrill 2005
|
80.3
|
Mai 2005
|
81.2
|
Mehefin 2005
|
81.9
|
Gorffennaf 2005
|
83.0
|
Awst 2005
|
83.3
|
Medi 2005
|
83.2
|
Hydref 2005
|
82.9
|
Tachwedd 2005
|
83.2
|
Rhagfyr 2005
|
83.6
|
Ionawr 2006
|
83.6
|
Chwefror 2006
|
83.6
|
Mawrth 2006
|
84.4
|
Ebrill 2006
|
86.2
|
Mai 2006
|
87.0
|
Mehefin 2006
|
88.0
|
Gorffennaf 2006
|
89.3
|
Awst 2006
|
90.2
|
Medi 2006
|
90.4
|
Hydref 2006
|
90.9
|
Tachwedd 2006
|
91.5
|
Rhagfyr 2006
|
92.6
|
Ionawr 2007
|
92.6
|
Chwefror 2007
|
92.8
|
Mawrth 2007
|
93.6
|
Ebrill 2007
|
95.5
|
Mai 2007
|
96.5
|
Mehefin 2007
|
97.7
|
Gorffennaf 2007
|
98.8
|
Awst 2007
|
99.6
|
Medi 2007
|
99.7
|
Hydref 2007
|
99.4
|
Tachwedd 2007
|
99.4
|
Rhagfyr 2007
|
99.1
|
Ionawr 2008
|
97.3
|
Chwefror 2008
|
96.2
|
Mawrth 2008
|
95.6
|
Ebrill 2008
|
95.8
|
Mai 2008
|
96.4
|
Mehefin 2008
|
95.2
|
Gorffennaf 2008
|
94.2
|
Awst 2008
|
92.4
|
Medi 2008
|
90.0
|
Hydref 2008
|
88.1
|
Tachwedd 2008
|
85.6
|
Rhagfyr 2008
|
84.5
|
Ionawr 2009
|
82.2
|
Chwefror 2009
|
81.3
|
Mawrth 2009
|
80.7
|
Ebrill 2009
|
81.5
|
Mai 2009
|
82.8
|
Mehefin 2009
|
83.6
|
Gorffennaf 2009
|
85.2
|
Awst 2009
|
86.2
|
Medi 2009
|
86.7
|
Hydref 2009
|
87.4
|
Tachwedd 2009
|
87.7
|
Rhagfyr 2009
|
88.3
|
Ionawr 2010
|
88.3
|
Chwefror 2010
|
88.2
|
Mawrth 2010
|
88.2
|
Ebrill 2010
|
89.5
|
Mai 2010
|
89.9
|
Mehefin 2010
|
90.4
|
Gorffennaf 2010
|
91.4
|
Awst 2010
|
91.3
|
Medi 2010
|
91.0
|
Hydref 2010
|
89.9
|
Tachwedd 2010
|
88.9
|
Rhagfyr 2010
|
88.5
|
Ionawr 2011
|
87.7
|
Chwefror 2011
|
87.3
|
Mawrth 2011
|
86.8
|
Ebrill 2011
|
88.2
|
Mai 2011
|
87.7
|
Mehefin 2011
|
88.0
|
Gorffennaf 2011
|
89.1
|
Awst 2011
|
89.3
|
Medi 2011
|
89.0
|
Hydref 2011
|
88.0
|
Tachwedd 2011
|
88.0
|
Rhagfyr 2011
|
87.6
|
Ionawr 2012
|
87.0
|
Chwefror 2012
|
86.8
|
Mawrth 2012
|
87.0
|
Ebrill 2012
|
88.0
|
Mai 2012
|
88.4
|
Mehefin 2012
|
89.3
|
Gorffennaf 2012
|
89.8
|
Awst 2012
|
89.9
|
Medi 2012
|
89.5
|
Hydref 2012
|
88.7
|
Tachwedd 2012
|
88.7
|
Rhagfyr 2012
|
88.4
|
Ionawr 2013
|
88.1
|
Chwefror 2013
|
88.0
|
Mawrth 2013
|
88.4
|
Ebrill 2013
|
89.3
|
Mai 2013
|
89.8
|
Mehefin 2013
|
90.6
|
Gorffennaf 2013
|
91.7
|
Awst 2013
|
92.5
|
Medi 2013
|
92.4
|
Hydref 2013
|
92.0
|
Tachwedd 2013
|
92.5
|
Rhagfyr 2013
|
93.2
|
Ionawr 2014
|
93.5
|
Chwefror 2014
|
93.8
|
Mawrth 2014
|
94.1
|
Ebrill 2014
|
96.2
|
Mai 2014
|
97.1
|
Mehefin 2014
|
98.1
|
Gorffennaf 2014
|
99.6
|
Awst 2014
|
100.8
|
Medi 2014
|
100.9
|
Hydref 2014
|
100.7
|
Tachwedd 2014
|
100.4
|
Rhagfyr 2014
|
100.5
|
Ionawr 2015
|
100.0
|
Chwefror 2015
|
100.0
|
Mawrth 2015
|
100.4
|
Ebrill 2015
|
101.4
|
Mai 2015
|
102.5
|
Mehefin 2015
|
103.4
|
Gorffennaf 2015
|
105.1
|
Awst 2015
|
106.1
|
Medi 2015
|
106.3
|
Hydref 2015
|
106.4
|
Tachwedd 2015
|
107.2
|
Rhagfyr 2015
|
107.4
|
Ionawr 2016
|
107.8
|
Chwefror 2016
|
107.7
|
Mawrth 2016
|
108.8
|
Ebrill 2016
|
109.1
|
Mai 2016
|
110.3
|
Mehefin 2016
|
111.6
|
Gorffennaf 2016
|
112.8
|
Awst 2016
|
112.8
|
Medi 2016
|
112.6
|
Hydref 2016
|
112.1
|
Tachwedd 2016
|
112.6
|
Rhagfyr 2016
|
112.8
|
Ionawr 2017
|
112.6
|
Chwefror 2017
|
112.9
|
Mawrth 2017
|
112.6
|
Ebrill 2017
|
114.5
|
Mai 2017
|
115.2
|
Mehefin 2017
|
116.2
|
Gorffennaf 2017
|
117.7
|
Awst 2017
|
118.3
|
Medi 2017
|
117.8
|
Hydref 2017
|
117.8
|
Tachwedd 2017
|
117.6
|
Rhagfyr 2017
|
118.0
|
Ionawr 2018
|
117.4
|
Chwefror 2018
|
117.3
|
Mawrth 2018
|
117.1
|
Ebrill 2018
|
118.1
|
Mai 2018
|
118.9
|