Year Percent 2000 47.51445 2001 48.50335 2002 49.49224 2003 50.48114 2004 51.47003 2005 52.45892 2006 53.44782 2007 54.43671 2008 55.42561 2009 56.4145 2010 57.40339 2011 58.39229 2012 59.38118 2013 60.37007 2014 61.35897 2015 62.34786 2016 63.33676 2017 64.32565 2018 65.31454 2019 65.31454 2020 65.31454 2021 65.31454 2022 65.31454