New information is shown for the quarter that ended on 30 June 2023 and data for January to March 2023 has been revised.
Dangosir gwybodaeth newydd ar gyfer y chwarter a ddaeth i ben ar 30 Mehefin 2023 ac mae data ar gyfer y cyfnod o fis Ionawr i fis Mawrth 2023 wedi'u diwygio.