asked the Chancellor of the Exchequer if he will give the tax paid, in cash and as a percentage of income, by a married couple, with no children, on a 1976 income of £4,000, £7,000 and £10,000 in 1976, and on incomes of equivalent purchasing power in 1946, 1950, 1960 and 1970.

I shall let the hon. Member have a reply as soon as possible.