1948 1949 1950 1951 1952 1953 1954 1955 1956 1957   The new unbreakable micro-groove seven-inch record becomes available in America Clothes rationing ends after eight years England and Wales are to get their first national parks - 77 years after Yellowstone became the world's first Gas industry nationalised Harrow is declared Britain's most expensive school, with annual fees of £315 The government admits the NHS costs 2s 6d (12.5p) a head per week - 1/4d more than originally thought The pound is devalued by 30.5 per cent from $4.03 to $2.80, shaking the financial world A gallon of petrol goes up tuppence halfpenny to 2s 3d (11p)     Copyright © 1998, NHS