Year % of commercial profits 2005 10.2 2006 11 2007 11.8 2008 11.8 2009 11.8 2010 11.8 2011 11.8 2012 11.8 2013 11.8 2014 11.8 2015 12.4 2016 13 2017 13 2018 13 2019 13