New information is shown for the quarter that ended on 31 December 2022 and data for July to September 2022 has been revised.
Dangosir gwybodaeth newydd ar gyfer y chwarter a ddaeth i ben ar 31 Rhagfyr 2022 ac mae data ar gyfer y cyfnod o fis Gorffennaf i fis Medi 2022 wedi'u diwygio.