Year % of commercial profits 2005 27.773333333333326 2006 25.84375 2007 24.612499999999997 2008 24.54375 2009 21.51764705882353 2010 20.95294117647059 2011 20.176470588235293 2012 20.176470588235293 2013 19.61176470588235 2014 18.49411764705882 2015 18.570588235294117 2016 18.423529411764704 2017 17.36470588235294 2018 17.21764705882353 2019 17.34705882352941