Year % of commercial profits 2005 20.1 2006 20.1 2007 20.1 2008 20.1 2009 20.1 2010 20.1 2011 20.1 2012 20.1 2013 22.1 2014 23.3 2015 23.3 2016 23.3 2017 23.3 2018 23.3 2019 23.3