Year % of profit 2005 34.32000000000001 2006 34.94 2007 35.379999999999995 2008 35.64 2009 35.32000000000001 2010 42.14 2011 45.36 2012 37.160000000000004 2013 38.9375 2014 38.8 2015 38.6875 2016 40.3125 2017 43.2 2018 43.587500000000006 2019 43.8625