The period April 2019 to March 2020 was largely before the coronavirus (COVID-19) pandemic and therefore there will have been little impact on the number of reported incidents.
Roedd y cyfnod rhwng mis Ebrill 2019 a mis Mawrth 2020 yn bennaf cyn pandemig y coronafeirws (COVID-19) ac felly ni fydd fawr o effaith wedi bod ar nifer y digwyddiadau a gofnodwyd.