Year % 2003 51.92 2004 51.92 2006 51.92 2007 49.59 2008 49.59 2009 49.59 2010 49.59 2011 49.59 2012 49.8 2013 49.8 2015 49.8 2017 50.15 2018 50.15 2019 50.15 2020 50.15 2021 50.15