Year % of commercial profits 2005 28.70000000000001 2006 27.557777777777787 2007 26.85111111111112 2008 26.43260869565218 2009 25.119148936170212 2010 24.65957446808511 2011 24.438297872340428 2012 24.59583333333333 2013 24.544897959183682 2014 24.151020408163266 2015 24.232653061224486 2016 24.06530612244898 2017 23.226530612244897 2018 23.116000000000003 2019 22.874000000000006