Year % 2001 42.03 2002 42.03 2003 42.28 2004 42.28 2005 42.28 2006 42.28 2007 42.22 2008 42.22 2009 42.22 2010 42.22 2011 42.22 2012 42.22 2013 42.22 2014 42.22 2015 44.03 2016 44.03 2017 44.31 2018 44.31 2019 44.31 2020 44.31 2021 44.31