Year % of commercial profits 2005 2.3647058823529408 2006 1.9222222222222216 2007 1.683333333333333 2008 1.621052631578947 2009 1.7210526315789472 2010 1.6263157894736842 2011 2.09 2012 2.73 2013 1.765 2014 1.7699999999999996 2015 1.77 2016 1.6800000000000002 2017 1.6900000000000002 2018 1.6900000000000002 2019 1.685