Year Per 100,000 People 1961 0.5592 1963 1.0455 1964 0.1263 1965 0.6635 1966 1.6683 1967 2.3056 1968 3.2829 1969 4.1686 1970 3.3744 1971 3.5923 1972 3.6588 1973 4.7671 1974 3.6749 1975 4.0339 1977 4.0983 1978 2.8589 1979 4.214 1980 3.3918 1982 6.7812 1984 5.2257 1985 5.2364 1986 5.9117 1987 5.649 1988 6.1509 1991 5.2214