Year Per 100,000 People 1980 5.8068 1981 6.752 1982 5.0558 1983 7.3251 1984 5.061 1985 4.9756 1986 3.7422 1987 5.4245 1988 3.0525 1989 7.3219 1990 7.2827 1991 9.0411 1992 10.865 1993 23.2521 1994 15.1992 1995 15.8774 1996 10.9309 1997 16.8022 1998 11.2978 1999 12.9982 2000 11.5368 2001 10.7076 2002 11.5867 2003 9.5702 2004 8.1955 2005 7.4945 2006 9.9647 2007 6.4065 2008 6.3911 2009 6.8788 2010 6.5735 2011 6.2046 2012 5.6117 2013 5.6628 2014 6.524 2015 5.3128