Yn dilyn buddsoddiad ychwanegol o £150 miliwn gan Lywodraeth Cymru dros y tair blynedd diwethaf, gwelwyd gwelliannau parhaus flwyddyn ar ôl blwyddyn yn yr amseroedd aros am driniaethau dewisol y GIG. Ar ddiwedd mis Mawrth 2019:roedd perfformiad 26 wythnos 1.4 pwynt canran yn uwch nag ym mis Mawrth 2018, ac roedd ar ei orau ers mis Gorffennaf 2013;roedd nifer y bobl fu’n aros dros 36 wythnos 26% yn is na'r sefyllfa ym mis Mawrth 2018, sef y perfformiad gorau ers mis Mai 2013;roedd nifer y bobl fu’n aros dros 52 wythnos 28% yn is nag ym mis Mawrth 2018;roedd nifer y bobl fu'n aros dros 8 wythnos am brofion diagnosteg 1% yn is o gymharu â sefyllfaoedd tebyg ym Mawrth 2018, er bod cyfres o brofion cardioleg newydd wedi'u hychwanegu;roedd nifer y bobl fu’n aros dros 14 wythnos am wasanaethau therapi 98% yn is nag ym mis Mawrth 2018 a dyma'r sefyllfa orau y rhoddwyd gwybod amdani erioed.
Following additional investment of £150 million from Welsh Government over the last 3 years, continual year on year improvements have been seen in NHS elective waiting times. At the end of March 2019:26 week performance was 1.4 percentage points higher than March 2018 and was the best position since July 2013the number of people waiting over 36 weeks was 26% lower than the March 2018 position and was the best position since May 2013the number of people waiting over 52 weeks was 28% lower than March 2018the number of people waiting over 8 weeks for diagnostics was 1% lower on a like-for-like position than March 2018, despite the addition of a suite of new cardiology tests, andthe number of people waiting over 14 weeks for therapy services was 98% lower than March 2018 and the best position ever reported.