Year Per 100,000 People 1981 21.3181 1982 20.7021 1985 21.5057 1986 16.4521 1987 16.5001 1988 17.2607 1989 20.0943 1990 21.3082 1991 21.2498 1992 23.3784 1993 28.0859 1994 27.2624 1995 30.7696 1996 32.3839 1997 31.2448 1998 31.3971 1999 29.9693 2000 34.5439 2001 34.7863 2002 33.6174 2003 33.9006 2013 24.3706 2014 20.001 2015 18.3267