Year % of commercial profits 2005 19.370400000000004 2006 18.69212598425197 2007 18.33307086614174 2008 18.127559055118112 2009 17.484374999999996 2010 17.047656249999996 2011 16.972868217054256 2012 16.998484848484846 2013 17.286524822695025 2014 17.112765957446808 2015 17.214893617021282 2016 17.434751773049655 2017 17.486524822695042 2018 17.399290780141847 2019 17.361702127659576