Year Per 100,000 People 1953 5.0571 1954 5.7754 1955 6.9451 1956 7.8566 1957 9.3531 1958 8.7986 1959 13.8643 1960 12.9604 1961 12.7763 1962 13.648 1963 13.2547 1964 15.508 1965 15.5759 1966 15.7555 1967 17.3684 1968 21.3092 1969 23.136 1970 22.1178 1971 23.5874 1972 21.2628 1973 21.8587 1974 20.3517 1975 19.3432 1976 20.582 1977 21.4486 1978 20.4744 1979 24.4529 1980 23.0128 1981 20.5171 1982 19.2153 1983 20.1769 1984 20.6351 1985 20.9635 1986 20.5082 1987 19.3443 1988 17.5916 1989 22.5792 1990 24.7107 1991 24.0155