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Data a dadansoddiadau o Gyfrifiad 2021
Cyhoeddwyd: 30 September 2019
Cyhoeddwyd: 29 June 2018
Cyhoeddwyd: 29 September 2017
Cyhoeddwyd: 30 June 2016
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.