Year % of profit 2005 71.8375 2006 70.84375 2007 71.48125000000002 2008 70.36874999999999 2009 68.63030303030304 2010 65.4060606060606 2011 57.16363636363635 2012 55.525 2013 47.23783783783785 2014 46.737837837837844 2015 46.79459459459459 2016 47.381081081081085 2017 47.802702702702696 2018 48.027027027027025 2019 48.410810810810815