Where data was not provided for 2021-22, some assurances have been given that further system changes are being implemented to allow reporting for 2022-23.
Lle na ddarparwyd data ar gyfer 2020-21, rhoddwyd rhywfaint o sicrwydd bod newidiadau pellach yn cael eu gwneud i systemau i ganiatáu adrodd ar gyfer 2021-22.