Year	% of commercial profits
2005	4
2006	4
2007	4
2008	2.2
2009	2.3
2010	2.3
2011	2.3
2012	2.3
2013	2.3
2014	2.3
2015	3.5
2016	3.5
2017	3.5
2018	3.4
2019	3.4