Year Percent 2000 85.33273 2001 85.33273 2002 85.33273 2003 85.33273 2004 85.33273 2005 86.03536 2006 86.88097 2007 87.72891 2008 88.57916 2009 89.43172 2010 90.28661 2011 91.14381 2012 92.00333 2013 92.86516 2014 93.72931 2015 94.59578 2016 95.46456 2017 96.33566 2018 97.20908 2019 98.08481 2020 98.96286 2021 99.50942 2022 99.50942