Year Percent 2000 82.22983 2001 82.96613 2002 83.70243 2003 84.43872 2004 85.17502 2005 85.91132 2006 86.64761 2007 87.38391 2008 88.12021 2009 88.8565 2010 89.5928 2011 90.3291 2012 91.06539 2013 91.80169 2014 92.53799 2015 93.27428 2016 94.01058 2017 94.74688 2018 95.48317 2019 96.21947 2020 96.95577 2021 97.69206 2022 98.42836