Year Percent 2000 7.53102 2001 8.45465 2002 9.37829 2003 10.30192 2004 11.22555 2005 12.14918 2006 13.07281 2007 13.99645 2008 14.92008 2009 15.84371 2010 16.76734 2011 17.69098 2012 18.61461 2013 19.53824 2014 20.46187 2015 21.3855 2016 22.30914 2017 23.23277 2018 24.1564 2019 24.1564 2020 24.1564 2021 24.1564 2022 24.1564