Since monthly data collections started in April 2006, average daily calls have risen from under 1,000 a day to between 1,200 and 1,450 a day.
Ers cychwyn casglu data misol ym mis Ebrill 2006, mae’r galwadau dyddiol ar gyfartaledd wedi codi o lai na 1,000 y diwrnod i rhwng 1,200 a 1,450 y diwrnod.