Year % of commercial profits 2005 14.98181818181818 2006 14.600000000000001 2007 14.600000000000001 2008 14.600000000000001 2009 14.588235294117647 2010 14.811764705882354 2011 15.332352941176469 2012 15.582857142857138 2013 15.316666666666663 2014 15.686111111111106 2015 15.67222222222222 2016 15.727777777777776 2017 15.73611111111111 2018 15.727777777777776 2019 16.177777777777777