Year % of commercial profits 2005 2.8 2006 2.1 2007 2.1 2008 1.9 2009 2.1 2010 2 2011 2 2012 2.1 2013 1.8 2014 1.8 2015 1.8 2016 1.8 2017 1.8 2018 1.8 2019 1.8