Year Percent 2000 85.43047 2001 85.90153 2002 86.38797 2003 86.87457 2004 87.36135 2005 87.84829 2006 88.3354 2007 88.82268 2008 89.31012 2009 89.79773 2010 90.28551 2011 90.77346 2012 91.26158 2013 91.74986 2014 92.23831 2015 92.72693 2016 93.21571 2017 93.70467 2018 94.19379 2019 94.66628 2020 95.13877 2021 95.34568 2022 95.74963