Year Per 100,000 People 1981 3.9065 1982 3.6632 1985 3.3093 1986 1.6613 1987 2.9544 1988 3.668 1989 3.0027 1990 6.4325 1991 4.4434 1992 5.4115 1993 7.3512 1994 7.1086 1995 6.6614 1996 5.9721 1997 4.7829 1998 4.9327 1999 3.4985 2000 4.4805 2001 4.2018 2002 4.4315 2003 4.1296 2004 3.5388 2005 3.6923 2006 3.1445 2007 2.624 2008 2.3529 2009 3.4319 2010 2.4603 2011 2.944 2012 2.2285 2013 1.708 2014 1.84 2015 1.7245