Year % of commercial profits 2005 3.2 2006 3.2 2007 3.2 2008 3.2 2009 3.2 2010 3.2 2011 3.2 2012 3.1 2013 0 2014 0 2015 0 2016 3.9 2017 3.9 2018 3.9 2019 3.6