Year % of commercial profits 2005 22.830000000000005 2006 22.240000000000002 2007 21.925000000000004 2008 21.23 2009 20.97 2010 20.9 2011 21.02 2012 21.175 2013 21.490909090909085 2014 20.886363636363633 2015 20.740909090909092 2016 20.33636363636364 2017 20.431818181818183 2018 20.504545454545454 2019 20.313636363636363