We are more confident both with the accuracy of these latest estimates, and of the relevance in this context of estimates excluding those already refunded.
Rydym yn fwy hyderus o ran cywirdeb yr amcangyfrifon diweddaraf hyn, ac o ran perthnasedd yn y cyd-destun hwn yr amcangyfrifon ac eithrio'r rhai a ad-dalwyd eisoes.