Year Percent 2000 96.72825 2001 96.72825 2002 96.72825 2003 96.72825 2004 96.71507 2005 96.70189 2006 96.68871 2007 96.67553 2008 96.66235 2009 96.64917 2010 96.63598 2011 96.6228 2012 96.60962 2013 96.59644 2014 96.58326 2015 96.57008 2016 96.5569 2017 96.54372 2018 96.53054 2019 96.51736 2020 96.50417 2021 96.50417 2022 96.50417