Year	% of profit
2005	47.7
2006	44.6
2007	41.8
2008	38.2
2009	38.5
2010	39.4
2011	39.6
2012	39.2
2013	39.5
2014	39
2015	41
2016	40.4
2017	40.7
2018	40.8
2019	41.2