Year % of commercial profits 2005 19.54375 2006 18.81875 2007 18.459374999999998 2008 17.96875 2009 18.115151515151517 2010 17.448484848484846 2011 17.084848484848486 2012 17.302777777777777 2013 17.48378378378378 2014 16.57837837837838 2015 16.491891891891896 2016 16.759459459459457 2017 16.799999999999997 2018 16.737837837837837 2019 16.540540540540544