Year Per 100,000 People 1964 0.5866 1968 0.8509 1969 0.3624 1970 0.6067 1972 0.8118 1973 0.888 1974 0.9348 1975 0.9724 1976 1.0765 1977 0.6701 1992 0.9356 1993 0.4379 1994 0.2179 1995 0.4688 1996 0.3732