Year Per 100,000 People 1981 15.5554 1982 15.5795 1985 13.7752 1986 13.1938 1987 15.0343 1988 16.8471 1989 16.7736 1990 16.7988 1991 20.7099 1992 19.8198 1993 23.7215 1994 9.215 1995 6.3445 1996 8.0126 1997 5.4227 1998 6.6182