Year Percent 2000 96.7852 2001 96.79126 2002 96.79733 2003 96.80339 2004 96.80946 2005 96.81552 2006 96.82159 2007 96.82765 2008 96.83372 2009 96.83978 2010 96.84585 2011 96.85191 2012 96.85798 2013 96.85798 2014 96.85798 2015 96.85798 2016 96.85798