Year Per 100,000 People 1955 6.864 1956 9.5637 1957 9.8443 1958 7.7456 1959 10.8408 1960 13.8569 1961 13.4626 1962 18.1401 1963 19.4607 1964 18.8859 1965 21.6592 1966 15.964 1967 19.8229 1968 23.9583 1969 16.0701 1970 25.1203 1971 29.2523 1972 24.3933 1973 27.3083 1974 31.7811 1975 29.8498 1976 33.4689 1977 31.5863 1978 34.5761 1979 31.9264 1980 33.3701 1981 33.0938 1982 35.0318 1983 30.6618 1984 32.2512 1985 32.7396 1986 32.2415 1987 34.3067