The report, which typically would have been published in September, has been published in a significantly shortened form in December due to pressures related to the ongoing COVID-19 pandemic.
Mae'r adroddiad, a fyddai fel arfer wedi'i gyhoeddi ym mis Medi, wedi'i gyhoeddi ar ffurf sylweddol fyrrach ym mis Rhagfyr oherwydd pwysau sy'n gysylltiedig â'r pandemig COVID-19 sy’n parhau.