Year Per 100,000 People 1980 6.7349 1981 6.651 1982 6.7545 1985 5.7897 1986 4.0155 1987 4.1798 1988 4.6894 1989 5.4954 1990 6.0574 1991 6.3067 1992 9.0955 1993 12.4167 1994 13.0169 1995 12.4746 1996 11.2145 1997 10.0911 1998 9.7271