This figure is likely to be higher than it would have been otherwise, following the changes to the questions on the Annual Population Survey to reflect the current qualifications framework.
Mae'n dal yn briodol defnyddio'r ystadegau hyn, fodd bynnag nodwch yr ansicrwydd cynyddol ynghylch amcangyfrifon sy'n deillio o'r Arolwg Blynyddol o'r Boblogaeth.