Year % 2001 44.31 2002 44.31 2003 44.38 2004 44.38 2005 44.38 2006 44.38 2007 44.47 2008 44.47 2009 44.47 2010 44.47 2011 44.47 2012 44.47 2013 44.47 2014 44.47 2017 44.56 2018 44.56 2019 44.56 2020 44.56 2021 44.56