Year % of commercial profits 2005 18.004347826086956 2006 17.62391304347826 2007 17.243478260869566 2008 16.997826086956522 2009 16.669565217391302 2010 16.145652173913046 2011 15.708695652173915 2012 15.37446808510638 2013 16.727450980392156 2014 16.67254901960784 2015 16.437254901960777 2016 16.431372549019603 2017 16.470588235294116 2018 16.299999999999997 2019 16.00196078431372