Year	% of profit
2005	60.1
2006	59.9
2007	57.9
2008	55.9
2009	55.2
2010	57.3
2011	57.7
2012	58.2
2013	58
2014	58.4
2015	58.4
2016	58.7
2017	57.1
2018	57.7
2019	55.4