Year % of commercial profits 2005 31.3 2006 31.3 2007 31.3 2008 31.3 2009 31.3 2010 31.3 2011 31.3 2012 31.3 2013 31.3 2014 31.3 2015 31.3 2016 31.3 2017 31.3 2018 31.3 2019 31.3