In nearly three years from April 2018 to February 2021, monthly non-residential revenues reached between £8 million and £10 million on only five occasions.
Mewn bron i 3 blynedd rhwng Ebrill 2018 a Chwefror 2021, dim ond ar bum achlysur y cyrhaeddodd refeniw amhreswyl misol rhwng £8 miliwn a £10 miliwn.