Year Percent 2000 90.64786 2001 91.05158 2002 91.45449 2003 91.85652 2004 92.25775 2005 92.65811 2006 93.05765 2007 93.45641 2008 93.85432 2009 94.25166 2010 94.6484 2011 95.04451 2012 95.43994 2013 95.75916 2014 96.07088 2015 96.37986 2016 96.686 2017 96.98922 2018 97.28943 2019 97.58651 2020 97.8804 2021 98.171 2022 98.44464