Year % of commercial profits 2006 31.7 2007 31.7 2008 31.8 2009 24.5 2010 10.1 2011 8.1 2012 6.9 2013 7.9 2014 7.9 2015 0.1 2016 0.1 2017 0.1 2018 0.1 2019 0.1