Year	% of profit
2005	35.2
2006	35.2
2007	35.2
2008	34.8
2009	34.8
2010	35.2
2011	34.4
2012	34.4
2013	33.5
2014	32.8
2015	32.8
2016	32.5
2017	32.5
2018	32.3
2019	34.4