Year Percent 2000 79.5343 2001 80.23923 2002 80.94727 2003 81.65842 2004 82.37268 2005 83.09005 2006 83.81053 2007 84.53412 2008 85.26081 2009 85.99062 2010 86.72353 2011 87.45956 2012 88.19869 2013 88.94093 2014 89.68628 2015 90.43474 2016 91.18631 2017 91.94099 2018 92.69878 2019 93.45516 2020 94.04996 2021 94.64573 2022 95.24246