Year Deaths per 100,000 1990 0.63 1991 0.62 1992 0.61 1993 0.61 1994 0.61 1995 0.61 1996 0.56 1997 0.5 1998 0.45 1999 0.42 2000 0.4 2001 0.37 2002 0.39 2003 0.37 2004 0.37 2005 0.33 2006 0.31 2007 0.33 2008 0.34 2009 0.32 2010 0.3 2011 0.29 2012 0.29 2013 0.29 2014 0.31 2015 0.3 2016 0.3