Year % of commercial profits 2005 31.662500000000005 2006 30.764000000000006 2007 30.267999999999997 2008 29.46923076923077 2009 29.17307692307692 2010 28.588461538461537 2011 27.85925925925926 2012 27.95185185185185 2013 27.848148148148148 2014 27.840740740740745 2015 27.922222222222224 2016 27.71111111111111 2017 26.84444444444444 2018 27.000000000000004 2019 26.333333333333332