Year Per 100,000 People 1981 20.5109 1982 18.6735 1985 14.1651 1986 15.766 1987 17.3108 1988 24.8961 1989 30.8052 1990 31.6994 1991 32.1496 1992 27.8524 1993 22.077 1994 20.4808 1995 21.8029 1997 24.5369 1998 24.3452 1999 21.3619 2000 20.1181 2001 20.2723