Year Percent 2000 79.87927 2001 80.48911 2002 81.13056 2003 81.76899 2004 82.40451 2005 83.03678 2006 83.66592 2007 84.29201 2008 84.915 2009 85.53459 2010 86.15087 2011 86.76391 2012 87.37451 2013 87.98237 2014 88.58737 2015 89.18931 2016 89.78796 2017 90.38318 2018 90.97468 2019 91.56222 2020 92.1456 2021 92.72465 2022 93.2991