§ Mr. Frank Fieldasked the Chancellor of the Exchequer (1) if he will express the percentage shares of tax paid for each year since 1977–78 by the following income groups: the top 10 per cent., 10 to 20 per cent., 20 to 30 per cent., 30 to 40 per cent., 40 to 50 per cent., 50 to 60 per cent., 60 to 70 per cent., 70 to 80 per cent., 80 to 90 per cent. and bottom 10 per cent., respectively;
(2) if he will express, in percentage terms, changes in the combined effect of tax and national insurance contributions in 1978–79, and the latest available date, taking 1956–57 tax year as the base for those on two-thirds average earnings, average earnings, twice, five and 10 times average earnings.