Since we started publishing household estimates in 1991, the estimated number of households has increased by 23.8%, and since 2011, it has increased by 5.7%.
Ers inni ddechrau cyhoeddi amcangyfrifon o aelwydydd yn 1991, mae'r amcangyfrif o nifer yr aelwydydd wedi cynyddu 23.8%, ac ers 2011, mae wedi cynyddu 5.7%.