§ Mr. Meacherasked the Secretary of State for Social Services what has been for a worker on average earnings retiring in (a) 1974, (b) 1979, (c) 1984 and (d) 1987 (i) the level of the retirement pension, (ii) average occupational pension, (iii) the state earnings-related pension scheme pension, where applicable, (iv) average investment income for a worker on average earnings.