Year % of commercial profits 2005 9.3 2006 8.8 2007 8.7 2008 9.2 2009 10 2010 9.3 2011 9.3 2012 9.6 2013 9.2 2014 9.3 2015 9.3 2016 9.3 2017 9.3 2018 9.3 2019 9.3