Year % of profit 2005 74 2006 74 2007 74 2008 71.3 2009 71.3 2010 75.8 2011 75.8 2012 75.7 2013 72.4 2014 63.5 2015 63.5 2016 63.5 2017 63.5 2018 63.5 2019 63.5