In July to September 2022 and in October to December 2022, these figures were 45%, the lowest quarterly percentages seen to date, before rising to 50% in January to March 2023.
Yn Ngorffennaf i Fedi 2022 ac yn Hydref i Ragfyr 2022, 45% oedd y ffigurau hyn, y ganranau chwarterol isaf a welwyd hyd yma, cyn codi i 50% yn Ionawr i Fawrth 2023.