In real terms, Wales saw the largest decrease amongst the 12 UK countries and English regions in GDP of -11.2% between 2019 and 2020.
Mewn termau real, Cymru welodd y gostyngiad mwyaf ymhlith 12 gwlad y DU a rhanbarthau Lloegr mewn CMC o -11.2% rhwng 2019 a 2020.