Year	% of profit
2005	53.1
2006	53.1
2007	53.1
2008	53.1
2009	49.7
2010	37.5
2011	37.9
2012	37.2
2013	36.5
2014	36.5
2015	36.5
2016	36.6
2017	36.6
2018	37
2019	37.5