Year % of commercial profits 2005 8.7 2006 8.7 2007 8.7 2008 8.7 2009 8.7 2010 8.7 2011 8.7 2012 8.7 2013 4.7 2014 10.3 2015 10.3 2016 10.3 2017 10.3 2018 10.3 2019 10.3