Year Per 100,000 People 1955 18.7673 1956 21.2429 1957 15.1947 1958 16.805 1959 13.5254 1960 18.4051 1963 11.8307 1964 10.8782 1965 11.9991 1966 10.9026 1967 8.3877 1968 11.5891 1969 10.95 1970 9.2909 1971 10.2857 1972 10.474 1973 10.2256 1974 10.3397 1975 10.0731 1976 9.6129 1977 9.214 1978 8.4071 1980 8.3953 1981 6.1593 1982 6.9252 1983 7.4544 1984 7.2077 1985 5.3968 1986 5.717 1987 4.9944 1988 7.4861 1989 9.9595 1990 7.7944