This was 9.4 percentage points higher than the previous month, which was the lowest figure recorded, but 3.6 percentage points lower than in January 2022.
Roedd hyn 9.4 pwynt canran yn uwch nag yn y mis diwethaf, sef y ffigwr isaf a gofnodwyd, ond 3.6 pwynt canran yn is nag ym mis Ionawr 2022.