Year % of commercial profits 2005 22.4 2006 22.4 2007 22.4 2008 23.6 2009 20.8 2010 18.9 2011 17.9 2012 21.2 2013 23.5 2014 19 2015 18.8 2016 18.8 2017 18.8 2018 18.8 2019 18.8