For example, in the latest twelve months there were around 61,000 red calls, more than twice as many as in 2017 (22,000).
Fe wnaeth ACC brosesu ychydig dros 61,000 o ffurflenni Treth Trafodiadau Tir (TTT), nifer tebyg i’r hyn a broseswyd yn y cyfnod blaenorol.