Rebased average household size was very similar to the rolled forward average household size for every year between mid-2012 and mid-2020.
O Awst 2021 i Ragfyr 2022, roedd refeniwau preswyl misol ar lefel uchel yn gyffredinol, o gymharu â’r refeniwau misol a welwyd yn 2018 i 2020.