Year Percent 2000 76.76847 2001 77.56523 2002 78.36539 2003 79.16892 2004 79.97583 2005 80.78613 2006 81.59981 2007 82.41688 2008 83.23732 2009 84.06116 2010 84.88837 2011 85.71897 2012 86.55296 2013 87.39031 2014 88.23107 2015 89.0753 2016 89.92305 2017 90.77437 2018 91.62932 2019 92.48794 2020 93.35029 2021 94.21641 2022 95.08636