Of these, 8,870 (55%) were boys and 7,210 (45%) were girls.
Yn y categori ‘Affricanaidd/Caribïaidd/Du Prydeinig y cofnodwyd y ganran isaf, sef 55.8% (55), wedi'i ddilyn gan ‘Grwpiau Ethnig Cymysg/Lluosog’ ar 70.7% (230).