Year Percent 2000 93.58505 2001 93.66644 2002 93.74782 2003 93.82921 2004 93.91059 2005 93.99198 2006 94.07336 2007 94.15475 2008 94.23613 2009 94.31752 2010 94.3989 2011 94.48028 2012 94.56167 2013 94.64305 2014 94.72444 2015 94.80582 2016 94.88721 2017 94.96859 2018 95.04998 2019 95.13136 2020 95.21275 2021 95.29413 2022 95.37552