We published the first estimate on 25 November 2022, published the second estimate on 23 December 2022 and the third estimate on 26 January 2023.
Fe wnaethom gyhoeddi’r amcangyfrif cyntaf ar 25 Tachwedd 2022, yr ail amcangyfrif ar 23 Rhagfyr 2022 a'r trydydd amcangyfrif ar 26 Ionawr 2023.