Year	% of profit
2005	36.6
2006	36.6
2007	38.6
2008	38.6
2009	38.6
2010	38.6
2011	38.8
2012	38.8
2013	35.9
2014	20.1
2015	20
2016	18.5
2017	18.5
2018	18.5
2019	22.6