Health professional students and recently retired staff recruited to help during the COVID-19 pandemic are included in staff numbers from 2020.
Mae myfyrwyr proffesiynau iechyd a staff a oedd wedi ymddeol yn ddiweddar a gafodd eu recriwtio i helpu yn ystod pandemig COVID-19 wedi'u cynnwys yn nifer y staff o 2020.