Year % of commercial profits 2005 22.921428571428574 2006 22.34642857142857 2007 21.839285714285722 2008 21.789285714285718 2009 21.121428571428574 2010 21.082142857142856 2011 20.896551724137932 2012 21.017241379310345 2013 21.335483870967746 2014 20.825806451612902 2015 20.738709677419358 2016 20.51290322580645 2017 20.62258064516129 2018 20.75161290322581 2019 20.635483870967743