There were increases in 10 of the 12 UK countries and English regions between 2016 and 2017, with the West Midlands having the largest percentage increase (up 2.9%).
Gwelwyd cynnydd ym 10 o'r 12 rhanbarth Saesneg a gwledydd y DU rhwng 2016 a 2017, gyda’r cynnydd canrannol mwyaf yn Gorllewin Canolbarth Lloegr (i fyny 2.9%).