Year % of commercial profits 2005 19.024999999999995 2006 18.35087719298245 2007 17.997368421052624 2008 17.650877192982453 2009 17.07217391304347 2010 16.613043478260867 2011 16.571304347826086 2012 16.57966101694915 2013 16.95873015873016 2014 16.812698412698417 2015 16.919047619047618 2016 17.13968253968254 2017 17.18730158730159 2018 17.082539682539682 2019 17.009523809523813