Data are available for 4 years for this tax risk and for both the count of transactions (shown by the line, left hand axis) and tax at risk (shown by the bars, right hand axis).
Mae data 4 flynedd ar gael ar gyfer y risg dreth hon ac ar gyfer nifer y trafodiadau (a ddangosir gan y llinell, echelin chwith) a threth mewn perygl (a ddangosir gan y bariau, echelin dde).