Year	% of profit
2005	50
2006	47.6
2007	47.6
2008	47.4
2009	48.4
2010	48.9
2011	48.3
2012	49.2
2013	48.7
2014	49.4
2015	50.4
2016	50.1
2017	50.1
2018	49.7
2019	49.7