Year Per 100,000 People 1981 5.8554 1982 5.49 1985 4.3629 1986 5.6691 1987 6.1123 1988 6.7586 1989 5.453 1990 7.7237 1991 10.4152 1992 9.5442 1993 11.7664 1994 5.2158 1995 4.0107 1996 4.1989 1997 3.982 1998 3.9363