Year % of commercial profits 2005 19.527906976744184 2006 18.313636363636366 2007 17.756818181818176 2008 17.613636363636363 2009 17.775000000000002 2010 17.381818181818183 2011 17.868181818181814 2012 17.911111111111104 2013 17.956521739130437 2014 17.247826086956525 2015 17.571739130434786 2016 18.410869565217393 2017 18.43913043478261 2018 18.378260869565214 2019 18.463043478260865