Year Percent 2000 86.53613 2001 86.69598 2002 87.49078 2003 88.26962 2004 89.03291 2005 89.78012 2006 90.51211 2007 91.22864 2008 91.93026 2009 92.61661 2010 93.28825 2011 93.94521 2012 94.58796 2013 95.21548 2014 95.8287 2015 96.42791 2016 97.0136 2017 97.586 2018 98.14569 2019 98.69299 2020 99.22494 2021 99.23699 2022 99.24875