A quarter (24.7%) of all wider practice staff that joined the workforce were aged under 30 and another quarter (25.8%) were aged 30 to 39.
Roedd chwarter (24.7%) yr holl staff eraill mewn practisau a ymunodd â'r gweithlu o dan 30 oed ac roedd chwarter arall (25.8%) rhwng 30 a 39 oed.