Year Per 100,000 People 1964 10.5591 1968 10.5789 1969 11.9536 1970 15.3404 1971 14.2434 1972 12.6536 1973 12.7227 1974 13.8506 1975 15.1815 1976 16.0899 1977 23.2566 1992 20.4725 1993 20.8821 1994 23.7471 1995 24.5943 1996 19.3515