Year % of commercial profits 2005 15.8 2006 15.8 2007 14.8 2008 14.8 2009 14.8 2010 14.8 2011 14.9 2012 14.9 2013 15.7 2014 19.3 2015 19.1 2016 17.6 2017 17.6 2018 17.6 2019 21.8