Year % of commercial profits 2005 22 2006 22 2007 22 2008 22 2009 18.2 2010 18.9 2011 18.6 2012 18 2013 18.2 2014 18.2 2015 18.5 2016 18.6 2017 18.6 2018 18.5 2019 18.3