Year % of commercial profits 2005 23.9 2006 23.9 2007 23.9 2008 23.9 2009 23.9 2010 28.4 2011 28.4 2012 28.4 2013 28.4 2014 28.4 2015 28.4 2016 28.4 2017 28.4 2018 28.4 2019 28.4