Year % of commercial profits 2005 20.799999999999997 2006 20.67142857142857 2007 19.153333333333332 2008 18.631249999999998 2009 16.1625 2010 14.462500000000002 2011 15.276470588235293 2012 15.705555555555556 2013 16.15555555555555 2014 15.92222222222222 2015 15.361111111111107 2016 15.155555555555557 2017 15.06666666666667 2018 14.950000000000001 2019 14.877777777777778