Year % of commercial profits 2005 20.6 2006 20.6 2007 20.6 2008 20.6 2009 20.6 2010 19.1 2011 20.6 2012 20.6 2013 20.6 2014 20.6 2015 20.6 2016 19.6 2017 19.6 2018 19.6 2019 19.6