Year % of commercial profits 2005 13.3 2006 13.3 2007 13.3 2008 13.3 2009 13.3 2010 13.3 2011 11.2 2012 11.2 2013 10.1 2014 10.1 2015 10.1 2016 10.1 2017 10.1 2018 10.1 2019 7.5