Year Per 100,000 People 1980 21.213 1981 21.0724 1982 21.0253 1985 17.4009 1986 12.2375 1987 13.129 1988 16.5624 1989 22.1904 1990 25.3498 1991 26.9231 1992 38.9947 1993 50.9922 1994 52.7749 1995 49.0408 1996 42.4996 1997 37.8149 1998 36.9494