In the three-month periods since, the number of transactions in each band has generally fallen, although there were increases in some bands in October to December 2021 and April to June 2022.
Yn y cyfnodau o dri mis ers hynny, mae nifer y trafodiadau ym mhob band wedi gostwng yn gyffredinol, er y bu cynnydd mewn rhai bandiau rhwng yn Hydref i Ragfyr 2021 ac Ebrill i Fehefin 2022.