Year Percent 2000 97.5 2001 97.5 2002 97.5 2003 97.5 2004 97.49912 2005 97.49789 2006 97.49666 2007 97.49542 2008 97.49419 2009 97.49296 2010 97.49173 2011 97.4905 2012 97.48926 2013 97.48803 2014 97.4868 2015 97.48557 2016 97.48434 2017 97.4831 2018 97.4831 2019 97.4831 2020 97.4831 2021 97.4831 2022 97.4831