Year % of commercial profits 2005 18.716564417177928 2006 17.99580838323353 2007 17.407647058823535 2008 17.093567251461987 2009 16.428488372093025 2010 15.979651162790695 2011 15.777586206896551 2012 15.624157303370781 2013 16.167195767195764 2014 16.15291005291004 2015 16.057671957671953 2016 16.198412698412707 2017 16.226984126984124 2018 16.074210526315788 2019 16.018947368421056