This was a decrease of 28,300 (2.2%) on February 2020, but a slight increase of 2,700 (0.2%) compared with the lowest point in July.
Roedd hyn yn ostyngiad o 28,300 (2.2%) o gymharu â mis Chwefror 2020, ond yn gynnydd mân o 2,700 (0.2%) o gymharu â’r pwynt isaf ym mis Gorffennaf.