Between 2016 and 2017 GVA per head in West Wales and the Valleys fell by 0.3 percentage points relative to the UK average, whilst East Wales increased by 0.2 percentage points.
Rhwng 2016 a 2017, gostyngodd GYC y pen yng Ngorllewin Cymru a'r Cymoedd 0.3 pwynt canran o’i gymharu â chyfartaledd y Deyrnas Unedig, tra cynyddodd 0.2 pwynt canran yn Nwyrain Cymru.