Year % 2000 40.42 2001 40.42 2002 40.42 2003 40.36 2004 40.36 2005 40.37 2006 40.36 2008 40.56 2009 40.56 2010 40.56 2011 40.56 2012 40.03 2013 40.03 2014 40.03 2015 40.03 2016 40.03 2017 40.11 2018 40.11 2019 40.11 2020 40.11 2021 40.11