Year	% of profit
2005	50.2
2006	49.8
2007	53.6
2008	55.6
2009	60.4
2010	51.9
2011	62.8
2012	61.5
2013	65
2014	65
2015	64.7
2016	65
2017	70.1
2018	70.1
2019	73.3