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Dewis pwnc arall neu clirio pob hidlydd.
Rhyddhawyd ar: 11 December 2012 | Bwletin ystadegol
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Rhyddhawyd ar: 16 July 2012 | Bwletin ystadegol
Rhyddhawyd ar: 9 December 2024 | Bwletin ystadegol
Rhyddhawyd ar: 8 November 2023 | Setiau data
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Rhyddhawyd ar: 8 March 2023 | Bwletin ystadegol
Rhyddhawyd ar: 23 November 2023 | Bwletin ystadegol
Rhyddhawyd ar: 7 March 2023 | Setiau data
Rhyddhawyd ar: 9 March 2026 | Setiau data
