Year % of commercial profits 2005 21.8 2006 21.6 2007 21.4 2008 18.7 2009 17 2010 17 2011 18.3 2012 18.5 2013 18.5 2014 18.2 2015 22.1 2016 21.7 2017 21.8 2018 21.7 2019 21.1