Year % of commercial profits 2005 18.4 2006 18.3 2007 18.3 2008 18.3 2009 18 2010 18 2011 18 2012 21.2 2013 21.2 2014 21 2015 22 2016 23.6 2017 25.2 2018 26.2 2019 26.2