Year Per 100,000 People 1981 5.0795 1982 6.2961 1985 4.6965 1986 5.9868 1987 4.873 1988 5.9001 1989 4.9157 1990 7.4272 1991 6.1802 1992 29.0073 1993 21.7367 1994 20.4497 1995 7.8468 1996 8.5732 1997 5.1101 1998 6.1479 1999 5.3631 2000 4.0656 2007 0.1344