But in order to increase usage it is of course essential that we understand who speaks Welsh, where they live, how old they are, what they do for a living and so on.
Ond er mwyn cynyddu defnydd mae’n hanfodol ein bod yn deall pwy sy’n siarad Cymraeg, ble maen nhw’n byw, beth yw eu hoed, beth yw eu gwaith ac ati.