Percentages based on a denominator of less than 23 have been suppressed to protect the confidentiality of individuals, as have figures based on less than 5 learners.
Mae'r canrannau sy'n seiliedig ar enwadur o lai na 23 wedi cael eu cuddio er mwyn diogelu cyfrinachedd unigolion, yn ogystal â ffigurau sy'n seiliedig ar lai na 5 o ddysgwyr.