Year Per 100,000 People 1955 10.0747 1956 7.8891 1957 5.0691 1958 6.4442 1959 5.2497 1960 4.3201 1963 6.4974 1964 7.0735 1965 5.6886 1966 8.1782 1967 6.3439 1968 6.4552 1969 6.4832 1970 5.935 1971 7.1178 1972 8.7923 1973 7.5033 1974 5.2149 1975 6.5456 1976 6.523 1977 3.9278 1978 8.2492 1980 16.8272 1981 17.3995 1982 12.9979 1983 9.1235 1984 11.2935 1985 9.8382 1986 9.5185 1987 8.9801 1988 11.4396 1989 17.0038 1990 14.007