The data supplied by the ONS to the Welsh Government for this analysis were disclosure controlled by removing all counts less than 10 and rounding all remaining figures to the nearest five.
Roedd y data a ddarparwyd i Lywodraeth Cymru ar gyfer y dadansoddiad hwn yn cael ei reoli gan ddatgeliad drwy ddileu pob cyfrif llai na 10 a thalgrynnu’r holl ffigurau sy’n weddill i’r pump agosaf.