Year Per 100,000 People 1981 3.9778 1982 4.0636 1985 3.3121 1986 4.2212 1987 2.8285 1988 5.2727 1989 2.7671 1990 8.1073 1991 4.5246 1992 28.5588 1993 21.1291 1994 20.804 1995 5.9997 1996 6.3102 1997 3.8178 1998 6.4257 1999 3.9916 2000 4.2161 2007 0.4381