479,444 emergency ambulance calls were made during 2017-18, 4.4% up on the previous year, and 126% more than in 1991-92.
Cafodd 479,444 o alwadau brys ambiwlans eu gwneud yn ystod 2017-18, 4.4% i fyny o’r flwyddyn flaenorol, a 126% yn fwy nag yn 1991-92.