Year Percent 2000 95.56245 2001 95.76544 2002 95.96843 2003 96.17142 2004 96.3744 2005 96.57739 2006 96.78038 2007 96.98337 2008 97.18636 2009 97.38934 2010 97.59233 2011 97.79532 2012 97.99831 2013 98.2013 2014 98.40428 2015 98.40428 2016 98.40428 2017 98.40428 2018 98.40428