Year % of commercial profits 2005 18.341176470588238 2006 18.341176470588238 2007 18.452941176470592 2008 17.994117647058825 2009 16.41176470588235 2010 15.794117647058824 2011 15.947058823529414 2012 16.633333333333333 2013 16.43 2014 15.944999999999999 2015 15.794999999999998 2016 15.889999999999997 2017 15.645000000000001 2018 15.7 2019 15.249999999999995