The number of red calls has increased significantly since 2016 – from around 50 calls on average per day to over 150 in 2024 – while amber calls have fluctuated.
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.