Year % of commercial profits 2005 8.918181818181818 2006 7.918181818181819 2007 8.472727272727273 2008 8.363636363636363 2009 8.345454545454546 2010 8.863636363636362 2011 8.454545454545453 2012 8.08181818181818 2013 7.954545454545454 2014 7.972727272727273 2015 8.20909090909091 2016 8.090909090909092 2017 8.090909090909092 2018 7.99090909090909 2019 8.436363636363636