were rationed until 1954. Most people grumbled, but for the poorest, rationing was beneficial, because their rationed diet was of greater nutritional value than their pre-war diet. Housewives organized to oppose the austerity. The Conservatives saw their opening and rebuilt their fortunes by attacking socialism, austerity, rationing, and economic controls, and were back in power by 1951. Prosperous 1950s As prosperity returned after 1950, Britons became more family centred. Leisure activities became more accessible to more people after the war. Holiday camps, which had first opened in the 1930s, became popular holiday destinations in the 1950s – and people increasingly had money to pursue their personal hobbies. The BBC's early television service was given a major boost in 1953 with the coronation of Elizabeth II, attracting an estimated audience of twenty million, proving an impetus for middle-class people to buy televisions. In 1950 1% owned television sets; by 1965 75% did. As austerity receded after 1950 and consumer demand kept growing, the Labour Party hurt itself by shunning consumerism as the antithesis of the socialism it demanded. Small neighbourhood stores were increasingly replaced by chain stores and shopping centres, with their wide variety of goods, smart-advertising, and frequent sales. Cars were becoming a significant part of British life, with city-centre congestion and ribbon developments springing up along many of the major roads. These problems led to the idea of the green belt to protect the countryside, which was at risk from development of new housing units. 1960s The 1960s saw dramatic shifts in attitudes and values led by youth. It was a worldwide phenomenon, in which British rock musicians, especially The Beatles, played an international role. The generations divided sharply regarding the new sexual freedom demanded by youth who listened to bands like The Rolling Stones. Sexual morals changed. One notable event was the publication of D. H. Lawrence's Lady Chatterley's Lover by Penguin Books in 1960. Although first printed in 1928, the release in 1960 of an inexpensive mass-market paperback version prompted a court case. The prosecuting council's question, "Would you want your wife or servants to read this book?" highlighted how far society had changed, and how little some people had noticed. The book was seen as one of the first events in a general relaxation of sexual attitudes. Other elements of the sexual revolution included the development of The Pill, Mary Quant's miniskirt and the 1967 legalisation