Year Deaths per 100,000 1953 28.43 1954 31.58 1955 34.97 1956 36.65 1957 38.54 1958 41.06 1959 44.11 1960 47.27 1961 50.48 1962 52.08 1963 55.23 1964 56.64 1965 57.88 1966 60.53 1967 62.11 1968 59.99 1969 61.08 1970 61.8 1971 63.54 1972 62.23 1973 63.52 1974 65.52 1975 66.35 1976 65.76 1977 67.65 1978 68.63 1979 67.55 1980 70.23 1981 69.6 1982 69.95 1983 71.64 1984 72.73 1985 72.65 1986 74.95 1987 73.76 1988 74.68 1989 73.58 1990 74.79 1991 72.66