Year Per 100,000 People 1981 33.526 1982 31.4736 1985 28.9704 1986 26.9451 1987 31.4335 1988 38.2324 1989 45.4216 1990 45.9082 1991 47.909 1992 32.4895 1993 47.7842 1994 43.7555 1995 40.9663 1996 33.0102 1997 37.3863 1998 0.8717 1999 20.9651 2000 0.2809 2001 20.7462 2002 21.989 2003 21.1579 2004 22.7983 2005 21.844 2006 22.4034 2007 24.5343 2008 15.1792 2009 13.0957 2010 14.6707 2011 13.1122 2012 12.9864 2013 9.5429 2014 11.8743 2015 12.0588 2016 8.5307