Year % of commercial profits 2005 10.8 2006 10.8 2007 10.8 2008 9.5 2009 9.5 2010 9.5 2011 9.4 2012 9.4 2013 4.8 2014 4.8 2015 4.8 2016 4.8 2017 4.8 2018 4.8 2019 4.8