Year Per 100,000 People 1981 25.355 1982 28.8893 1985 24.0859 1986 19.9505 1987 18.1533 1988 24.2997 1989 35.3332 1990 32.1477 1991 41.8107 1992 28.7677 1993 46.0192 1994 41.1142 1995 40.3411 1996 36.8925 1997 35.3912 1998 0.7476 1999 22.6236 2000 0.7611 2001 23.259 2002 25.4792 2003 25.2689 2004 24.0452 2005 23.4724 2006 26.882 2007 24.7468 2008 17.9472 2009 12.0118 2010 10.3947 2011 8.8401 2012 11.5075 2013 9.8852 2014 9.056 2015 10.5202 2016 6.7249