Year % of commercial profits 2005 28.226315789473688 2006 26.54 2007 25.075 2008 25.010000000000005 2009 22.180952380952384 2010 21.523809523809526 2011 20.809523809523814 2012 20.85238095238096 2013 21.02727272727273 2014 20.150000000000002 2015 20.231818181818184 2016 19.981818181818184 2017 19.17727272727273 2018 19.104545454545455 2019 18.231818181818184