Year % 2000 57.98 2001 57.98 2002 56.95 2003 56.95 2004 56.95 2005 56.95 2006 56.95 2007 56.95 2008 56.26 2009 56.26 2010 56.26 2011 56.26 2012 54.58 2013 54.58 2014 54.58 2015 54.58 2016 54.58 2018 54.95 2019 54.91 2020 54.91 2021 54.91