source: It was also the first percentage increase in the numbers of Welsh speakers ever recorded by a Census, with the greatest increase seen among young people aged 5–16.
target: Dyma hefyd y cynnydd cyntaf o ran canran yn nifer y siaradwyr Cymraeg i’w gofnodi erioed gan Gyfrifiad, gyda’r cynnydd mwyaf ymysg pobl ifanc 5–16 oed.