Year Percent 2002 80.58454 2003 80.58454 2004 80.58454 2005 80.58454 2006 80.58454 2007 81.41187 2008 82.2434 2009 83.07912 2010 83.91904 2011 84.76315 2012 85.61145 2013 86.46395 2014 87.32063 2015 88.18152 2016 89.04659 2017 89.91586 2018 90.78932 2019 91.66697 2020 91.66697 2021 91.66697 2022 91.66697