The previous wave of the survey, undertaken end of March 2020, had found that 97% of businesses were closed with 5% not having opened in 2020 at all.
Darganfuwyd y cam blaenorol o’r arolwg, a’i hymgymerwyd diwedd Mawrth 2020, bod 97% o fusnesau wedi cau, gyda 5% heb agor yn 2020 o’r cwbl.