Year	% of profit
2005	34.8
2006	34.8
2007	34.8
2008	34.8
2009	34.8
2010	34.8
2011	34.8
2012	34.8
2013	38.8
2014	38.8
2015	38.8
2016	35.5
2017	35.5
2018	35.6
2019	36.4