Year Percent 2000 62.36763 2001 63.09664 2002 64.17116 2003 65.25135 2004 66.33694 2005 67.42794 2006 68.52436 2007 69.62596 2008 70.73329 2009 71.84611 2010 72.96414 2011 74.09021 2012 75.22407 2013 76.36572 2014 77.51545 2015 78.67274 2016 79.83759 2017 81.0103 2018 82.19061 2019 83.37855 2020 84.57385 2021 85.77681 2022 85.87988