When comparing Wales with the English regions, only 2 regions had larger decreases; the North East (39.4%) and the West Midlands (47.2%).
Wrth gymharu Cymru â rhanbarthau Lloegr, dim ond 2 ranbarth a gafodd ostyngiadau mwy; y Gogledd Ddwyrain (39.4%) a Gorllewin Canolbarth Lloegr (47.2%).