Year % of commercial profits 2005 18.65333333333333 2006 18.28241758241758 2007 17.89450549450549 2008 17.4956043956044 2009 16.827173913043474 2010 16.282608695652172 2011 16.103260869565215 2012 16.081914893617018 2013 16.853921568627452 2014 16.729411764705883 2015 16.726470588235294 2016 16.97745098039216 2017 17.038235294117644 2018 16.908823529411766 2019 16.702941176470585