The chart shows the 12 month moving average has remained at around 6.0% over the last year, despite the increases between March and April 2020 and again between September and December 2020.
Mae’r siart yn dangos bod y cyfartaledd symudol 12 mis wedi parhau tua 6.0% dros y flwyddyn ddiwethaf, er gwaethaf y cynnydd rhwng Mawrth ac Ebrill 2020 ac eto rhwng Medi a Rhagfyr 2020.