Year Percent 2000 85.97865 2001 86.34583 2002 86.73533 2003 87.12552 2004 87.51639 2005 87.90796 2006 88.30021 2007 88.69315 2008 89.08678 2009 89.4812 2010 89.88079 2011 90.30275 2012 90.72337 2013 91.14274 2014 91.56068 2015 91.97735 2016 92.39268 2017 92.80786 2018 93.22284 2019 93.63736 2020 94.05123 2021 94.46428 2022 94.87631