Cwm Taf Morgannwg health board could not provide data for academic year 2021/22 due to the ongoing pandemic impact so the data shown is related to the remaining 6 health boards.
Hyd at ddatganiad ystadegol Gorffennaf 2022, nid oedd y gyfres ddata ar gael ar gyfer Bwrdd Iechyd Cwm Taf Morgannwg.