asked the Secretary of State for Energy (1) what has been the percentage rise in total, and for each of the years individually, in the price of oil since 1975;(2) what has been the percentage rise in total, and for each of the years individually, in the price of gas since 1975;(3) what has been the percentage rise in total, and for each of the years individually, in the price of electricity since 1975.

The per cent. increase in the prices of gas, electricity and oil for both the domestic and industrial sectors for each year since 1975 are shown in the following table:investigations by the Monopolies and Mergers Commission.