Year Per 100,000 People 1964 5.0662 1968 3.1086 1969 2.6833 1970 3.7779 1971 4.4192 1972 2.3529 1973 3.1779 1974 3.9095 1975 3.555 1976 3.5238 1977 3.2074 1992 4.6828 1993 5.8052 1994 5.7588 1995 4.7934 1996 5.0305