asked the Chancellor of the Exchequer whether he will publish in the Official Report a table showing for 1957, 1961, 1971, 1981 and the latest year for which figures are available, the number of tax units taxed as self-employed compared to the number classified in the employment statistics and population censuses as self-employed, the amount of income assessed to tax, and the amount of income and the amount of tax paid per head in terms of 1980 prices; and if he will provide an estimate for the current financial year.

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