These are being brought together by using the National Data Resource at NWIS and are planned to be published as experimental statistics, in March 2021.
Mae’r rhain yn cael eu dwyn ynghyd drwy ddefnyddio’r Adnodd Data Cenedlaethol yn NWIS a bwriedir eu cyhoeddi fel ystadegau arbrofol, ym mis Mawrth 2021.