Year Per 100,000 People 1979 16.8665 1980 16.1219 1981 17.5481 1982 16.8487 1983 13.8873 1984 15.2354 1985 18.0084 1986 21.4882 1987 14.7877 1988 16.4515 1989 13.0158 1990 16.2071 1991 22.0516 1992 23.4936