Year Per 100,000 People 1981 22.9544 1982 17.4653 1985 19.3229 1986 19.1979 1987 16.9962 1988 16.6078 1989 18.0514 1990 15.2652 1991 13.9546 1992 10.754 1993 12.4474 1994 11.6866 1995 11.0185 1996 11.8414 1997 13.6792 1998 18.7209