Year Per 100,000 People 1989 5.324 1990 7.9807 1991 6.9165 1992 7.2525 1993 6.1261 1994 6.1452 1995 5.8625 1996 5.0932 1997 4.9032 1998 4.4797 1999 4.5065 2000 4.527 2001 4.1951 2002 4.3308 2003 4.6584 2004 3.5313 2005 2.9674 2006 2.4636 2007 2.3504 2008 2.7772 2009 2.5053 2010 2.5578 2011 2.1428 2012 2.3717 2013 1.9365 2014 1.9062 2015 1.5154 2016 1.649