Year Percent 2000 89.5553 2001 89.91733 2002 90.27672 2003 90.61265 2004 90.82701 2005 91.03068 2006 91.23114 2007 91.42826 2008 91.62242 2009 91.81346 2010 92.00124 2011 92.18743 2012 92.3718 2013 92.55433 2014 92.73511 2015 92.9138 2016 93.24264 2017 93.57005 2018 93.89584 2019 94.1825 2020 94.39579 2021 94.60611 2022 94.65157