“Mae ffigurau'r incwm gwario gros yn ffordd bwysig o fesur lles economaidd, gan ei fod yn dangos faint o arian sydd gan bobl i'w wario ar ôl iddyn nhw dalu eu prif filiau.
“Gross disposable income figures are an important measure of economic well being as they show the amount of money people have left to spend once they have paid their key bills.