Year % of commercial profits 2005 16.87727272727273 2006 16.526666666666664 2007 16.308888888888887 2008 16.39333333333333 2009 15.399999999999997 2010 15.217391304347826 2011 14.91521739130435 2012 14.925531914893622 2013 16.080392156862747 2014 15.768627450980395 2015 15.572549019607848 2016 15.674509803921573 2017 15.327450980392163 2018 15.437254901960786 2019 15.658823529411766