HC Deb 26 January 1978 vol 942 c779W
Mr. MacGregor

asked the Chancellor of the Exchequer what is his estimate of the yield of income tax for each of the years 1973–74 to 1977–78; if he will give figures in parallel, showing what that

Income Tax Total CG Taxation
Actual/ estimated receipts Yield if tax had risen in line with RPI Annual/ estimated receipts Yield it tax had risen in line with RP[...]
1973–74 7,442 17,274
1974–75 10,425 8,774 22,128 20,366
1975–76 15,163 10,931 28,117 25,374
1976–77 17,075 12,601 32,456 29,251
1977–78 17,300 35,537

Source

Annual Abstract of Statistics.

FSBR (amended to take account of the October measures).