Year Per 100,000 People 1980 12.3373 1981 12.2979 1982 12.0026 1985 10.0205 1986 7.1049 1987 7.5219 1988 9.3784 1989 12.1471 1990 13.8144 1991 14.7656 1992 21.9298 1993 28.8427 1994 30.2423 1995 28.6185 1996 24.7091 1997 22.1855 1998 21.1769