Three out of ten (30.1%) administrative staff were aged 39 or younger, while just over half (53.0%) were aged 50 or over, including 21.5% of staff aged 60 or over.
Roedd tri o bob deg (30.1%) aelod o staff gweinyddol yn 39 oed neu'n iau, ac roedd ychydig dros hanner (53.0%) yn 50 oed neu drosodd, gan gynnwys 21.5% o staff a oedd yn 60 oed neu drosodd.