Year Total 1965 242890000 1966 265100000 1967 288100000 1968 309200000 1969 328300000 1970 353040000 1971 377000000 1972 400400000 1973 429000000 1974 458900000 1975 490800000 1976 519680000 1977 545800000 1978 571530000 1979 585600000 1980 603180000 1981 608820000 1982 612550000 1983 616340000 1984 612710000