Year % of commercial profits 2005 16.6 2006 16.6 2007 16.8 2008 16.8 2009 16.7 2010 16 2011 16 2012 16 2013 16 2014 13.1 2015 13.1 2016 13.1 2017 13.1 2018 13.1 2019 13.1