This was a decrease of 30,300 (2.4%) on February 2020, but a slight increase of 2,900 (0.2%) compared with the lowest point in July.
Roedd hyn yn ostyngiad o 30,300 (2.4%) o gymharu â mis Chwefror 2020, ond yn gynnydd mân o 2,900 (0.2%) o gymharu â’r pwynt isaf ym mis Gorffennaf.