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Data a dadansoddiadau o Gyfrifiad 2021
We moved them to The National Archives website, to keep this website as responsive as possible.
Please note: all historical data is still on this website.
Data a gyrchwyd gan y defnyddiwr | Released on 1 March 2016 | Ref: 005431
Data a gyrchwyd gan y defnyddiwr | Released on 25 November 2015 | Ref: 004939
Data a gyrchwyd gan y defnyddiwr | Released on 13 November 2015 | Ref: 004883