Year % of profit 2005 65.7 2006 65.7 2007 65.7 2008 65.7 2009 61.2 2010 55 2011 55 2012 55 2013 48.9 2014 48.9 2015 48.9 2016 48.9 2017 48.9 2018 48.9 2019 48.9