Year Percent 2000 88.81654 2001 89.2256 2002 89.63466 2003 90.04372 2004 90.52395 2005 91.00484 2006 91.48636 2007 91.96853 2008 92.45134 2009 92.9348 2010 93.4189 2011 93.90364 2012 94.38903 2013 94.87506 2014 95.36174 2015 95.84906 2016 96.33702 2017 96.82563 2018 97.31488 2019 97.77677 2020 97.77677 2021 97.77677 2022 97.77677