Year % of commercial profits 2005 15 2006 15 2007 15 2008 15 2009 20.3 2010 20.3 2011 17.3 2012 17.3 2013 22 2014 21.5 2015 21.2 2016 21.2 2017 21.6 2018 21.6 2019 21.6