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Dewis pwnc arall neu clirio pob hidlydd.
Rhyddhawyd ar: 7 June 2021 | Bwletin ystadegol
Rhyddhawyd ar: 29 March 2021 | Bwletin ystadegol
Rhyddhawyd ar: 14 March 2022 | Setiau data
Rhyddhawyd ar: 24 March 2020 | Setiau data
Rhyddhawyd ar: 21 July 2016 | Erthygl
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Rhyddhawyd ar: 24 March 2016 | Erthygl
Rhyddhawyd ar: 24 March 2020 | Erthygl
Rhyddhawyd ar: 14 March 2022 | Erthygl
