Information on the number of registered patients and workforce age distribution, as at 31 December 2020, 31 March and 30 June 2021.
Gwybodaeth am nifer y cleifion cofrestredig a dosbarthiad oedran y gweithlu, ar 31 Rhagfyr 2020, 31 Mawrth a 30 Mehefin 2021.