Source: Welsh Government Analysis of the DWP's Households below average income dataset, based on the Family Resource Survey
Ffynhonnell: Dadansoddiad Llywodraeth Cymru o set ddata Cartrefi Islaw’r Incwm Cyfartalog, yr Adran Gwaith a Phensiynau, yn seiliedig ar yr Arolwg o Adnoddau Teulu