Year Per 100,000 People 1966 3.7459 1967 4.5222 1968 4.8783 1969 4.411 1970 5.0434 1977 4.0652 1978 4.1568 1979 3.7172 1980 3.87 1981 3.9349 1982 3.3053 1983 3.4795 1984 3.2377 1985 3.5348 1986 4.2657 1987 4.4642 1988 4.1754 1989 3.7589 1990 3.6313 1991 2.9576 1992 2.9631 1993 2.8652 1994 2.9342 1995 2.8093 1996 2.9338