Year	% of commercial profits
2005	19.9
2006	19.9
2007	18.8
2008	20.1
2009	18.4
2010	17.6
2011	17.2
2012	17.2
2013	17.6
2014	17.6
2015	17.6
2016	17.6
2017	17.6
2018	16
2019	15