Year Percent 2000 88.5447 2001 88.90384 2002 89.26363 2003 89.62405 2004 89.98513 2005 90.34684 2006 90.70921 2007 91.07221 2008 91.43587 2009 91.80016 2010 92.1651 2011 92.53069 2012 92.89692 2013 93.26379 2014 93.63131 2015 93.99948 2016 94.36828 2017 94.73774 2018 95.10784 2019 95.47858 2020 95.84997 2021 95.84997 2022 95.84997