Year Percent 2000 93.83142 2001 93.95367 2002 94.07592 2003 94.19817 2004 94.32042 2005 94.44266 2006 94.56491 2007 94.68716 2008 94.80941 2009 94.93166 2010 95.05391 2011 95.17616 2012 95.29841 2013 95.42066 2014 95.42066 2015 95.42066 2016 95.42066 2017 95.42066