Year % of commercial profits 2005 30.9 2006 30.9 2007 30.9 2008 30.9 2009 30.9 2010 26.4 2011 26.4 2012 26.4 2013 26.4 2014 26.4 2015 26.4 2016 26.4 2017 26.4 2018 26.4 2019 26.4