Year Percent 2000 87.32766 2001 87.82702 2002 88.32716 2003 88.82807 2004 89.32975 2005 89.83222 2006 90.33545 2007 90.83947 2008 91.34425 2009 91.84982 2010 92.35616 2011 92.86327 2012 93.37116 2013 93.87983 2014 94.38927 2015 94.89948 2016 95.41047 2017 95.83464 2018 96.25881 2019 96.68297 2020 97.10714 2021 97.53131 2022 97.95547