Year Per 100,000 People 1955 17.8223 1956 18.1271 1957 17.6102 1958 15.4611 1959 22.6088 1960 14.4144 1963 15.7208 1964 11.3032 1965 17.1244 1966 18.3278 1967 16.3797 1968 14.8013 1969 15.6653 1970 15.5277 1971 15.8252 1972 19.4677 1973 20.2121 1974 16.9575 1975 13.0183 1976 17.9384 1977 18.0506 1978 18.1232 1980 12.6928 1981 14.44 1982 15.4054 1983 17.6469 1984 19.4658 1985 14.4426 1986 9.7504 1987 13.3799 1988 12.7888 1989 13.3446 1990 15.2121