Year Percent 2000 80.14889 2001 80.93497 2002 81.71008 2003 82.47468 2004 83.22853 2005 83.97138 2006 84.70408 2007 85.42608 2008 86.09833 2009 86.74732 2010 87.3922 2011 88.03241 2012 88.66852 2013 89.30003 2014 89.92726 2015 90.55042 2016 91.16911 2017 91.78357 2018 92.39508 2019 93.00324 2020 93.60797 2021 94.2089 2022 94.80581