Year Percent 2000 62.45915 2001 62.45915 2002 62.45915 2003 62.45915 2004 62.45915 2005 63.12607 2006 63.79299 2007 64.45991 2008 65.12683 2009 65.79375 2010 66.46067 2011 67.12759 2012 67.79451 2013 68.46143 2014 69.12835 2015 69.79527 2016 70.46219 2017 71.12911 2018 71.79603 2019 72.46295 2020 73.12987 2021 73.79679 2022 74.18884