Year Per 100,000 People 1981 32.2288 1982 32.7006 1985 34.4195 1986 25.7501 1987 24.6378 1988 25.2643 1989 24.4847 1990 22.2429 1991 24.7087 1992 20.9996 1993 24.5469 1994 22.9322 1995 26.7868 1996 26.7757 1997 27.5807 1998 19.5568 1999 20.3481 2000 17.6167 2001 25.0154 2002 21.1614 2003 23.9761 2004 20.8313 2005 20.888 2006 23.5429 2007 20.4055 2008 22.0499 2009 24.8224 2010 22.4314 2011 17.3378 2012 18.6967 2013 19.0931 2014 18.1355 2015 20.4524 2016 14.9355