However, these estimates refer to population as at 30 June 2020, meaning that they only account for the first 3 months of the pandemic.
Fodd bynnag, mae’r amcangyfrifon hyn yn cyfeirio at y boblogaeth fel yr oedd ar 30 Mehefin 2020, gan olygu mai dim ond tri mis cyntaf y pandemig sy’n cael eu cyfrif ynddynt.