Year Per 100,000 People 1981 7.4016 1982 5.8779 1985 4.2861 1986 5.7798 1987 4.6549 1988 10.0643 1989 11.0871 1990 6.5624 1991 7.8799 1992 4.65 1993 6.9437 1994 7.2358 1995 4.37 1996 9.0496 1997 5.5448 1998 9.1363