Year Deaths per 100,000 1953 4.91 1954 5.31 1955 5.68 1956 5.39 1957 5.5 1958 5.31 1959 5.74 1960 5.1 1961 5.43 1962 5.53 1963 5.52 1964 6.11 1965 5.77 1966 5.66 1967 5.77 1968 5.45 1969 6.24 1970 5.67 1971 5.35 1972 5.49 1973 5.36 1974 5.41 1975 5.58 1976 5.91 1977 5.99 1978 6.96 1979 6.6 1980 6.67 1981 6.75 1982 6.65 1983 7.41 1984 7.58 1985 7.62 1986 7.98 1987 8.34 1988 7.95 1989 8.53 1990 8.49 1991 9.44