Year Percent 2000 99.0702 2001 99.0702 2002 99.07199 2003 99.07377 2004 99.07556 2005 99.07735 2006 99.07913 2007 99.08092 2008 99.08271 2009 99.08449 2010 99.08628 2011 99.08806 2012 99.08985 2013 99.09164 2014 99.09274 2015 99.09274 2016 99.09274 2017 99.09274 2018 99.09274 2019 99.09274 2020 99.09274 2021 99.09274 2022 99.09274