Year	% of profit
2005	53.4
2006	53.4
2007	50.6
2008	50.6
2009	50.4
2010	50.2
2011	50.1
2012	44.4
2013	52.5
2014	51.9
2015	51.9
2016	51.3
2017	50.1
2018	50.1
2019	50.1