There were increases in 10 of the 12 UK countries and English regions between 2017 and 2018, with Wales having the largest percentage increase (up 2.4%).
Gwelwyd cynnydd ym 10 o'r 12 rhanbarth Saesneg a gwledydd y DU rhwng 2017 a 2018, gyda’r cynnydd canrannol mwyaf yng Nghymru (i fyny 2.4%).