Year % of commercial profits 2005 21.2 2006 16 2007 16 2008 16 2009 16.4 2010 16.1 2011 15.4 2012 17 2013 17.1 2014 16.8 2015 16.8 2016 16.9 2017 17 2018 17.1 2019 17.1