“Mae asesiad y Swyddfa Cyfrifoldeb Cyllidebol yn dangos bod yr economi wedi tanberfformio ers y refferendwm, ac mae gwaith ymchwil annibynnol yn awgrymu bod economi’r DU eisoes un y cant yn llai nag y byddai wedi bod fel arall. Mae hyn yn gyfystyr â cholled o tua £300 i bob unigolyn yng Nghymru bob blwyddyn.
“An assessment by the Office of Budget Responsibility shows that the economy has underperformed since the referendum, with independent research indicating that the UK economy is already one percent smaller than it otherwise would have been. This represents an annual loss of around £300 for each person in Wales.