Year % 2002 56.2 2004 56.2 2005 56.27 2006 56.27 2008 56.29 2009 56.29 2010 56.27 2011 56.27 2012 56.27 2013 56.27 2014 56.31 2015 56.31 2016 56.31 2018 56.26 2019 56.26 2020 56.26 2021 56.26