Year % of commercial profits 2005 17.891176470588235 2006 16.75142857142857 2007 16.739999999999995 2008 16.214285714285715 2009 15.477142857142855 2010 15.185714285714285 2011 14.365714285714287 2012 14.265714285714287 2013 15.831578947368424 2014 15.986842105263158 2015 15.631578947368421 2016 15.497368421052625 2017 15.55789473684211 2018 15.32631578947368 2019 15.152631578947368