Trends remained stable between 2017-18 and 2019-20 whereas the £100,000 to £200,000 and £200,000+ categories were larger in 2021-22 and 2022-23.
Cafwyd sefydlogrwydd rhwng 2017-18 a 2019-20 ond roedd y categorïau £100,000 i £200,000 a £200,000+ yn fwy o 2021-22 ymlaen.