Year % of commercial profits 2005 19.196491228070176 2006 18.58103448275862 2007 18.184482758620685 2008 17.927586206896557 2009 16.884482758620692 2010 16.429310344827588 2011 16.533898305084747 2012 16.570000000000004 2013 17.018181818181827 2014 16.798484848484858 2015 16.859090909090913 2016 17.2469696969697 2017 17.44848484848485 2018 17.321212121212124 2019 17.290909090909086