Year Percent 2000 75.28482 2001 76.25932 2002 77.22445 2003 78.17993 2004 79.12611 2005 80.06187 2006 80.97676 2007 81.88158 2008 82.77673 2009 83.66144 2010 84.53261 2011 85.37713 2012 86.21292 2013 87.03969 2014 87.85794 2015 88.66725 2016 89.46767 2017 90.25872 2018 91.0408 2019 91.81374 2020 92.5874 2021 93.35177 2022 94.10719