Year Percent 2000 93.4996 2001 93.4996 2002 93.87197 2003 94.24507 2004 94.61891 2005 94.99349 2006 95.36881 2007 95.74486 2008 96.12165 2009 96.49918 2010 96.87744 2011 97.25645 2012 97.63619 2013 98.01667 2014 98.39788 2015 98.77984 2016 99.03906 2017 99.21965 2018 99.40023 2019 99.58082 2020 99.64544 2021 99.65968 2022 100