Year Percent 2000 75.94804 2001 76.89437 2002 77.84143 2003 78.78924 2004 79.7378 2005 80.68709 2006 81.63714 2007 82.58792 2008 83.53945 2009 84.49172 2010 85.44474 2011 86.3985 2012 87.35301 2013 88.30826 2014 89.26425 2015 90.22099 2016 91.17847 2017 92.13669 2018 93.51374 2019 94.45391 2020 95.37996 2021 96.30602 2022 97.23207