Year Percent 2000 76.03131 2001 77.31165 2002 78.60187 2003 79.90197 2004 81.21195 2005 82.5318 2006 83.86153 2007 85.20114 2008 86.48584 2009 87.33901 2010 88.19217 2011 89.04533 2012 89.89849 2013 90.75165 2014 91.60481 2015 92.45797 2016 93.31113 2017 94.16429 2018 95.01745 2019 95.87061 2020 96.72377 2021 97.57693 2022 98.4301