Year	% of profit
2005	25.4
2006	25.4
2007	25.4
2008	25.5
2009	25.6
2010	25.4
2011	25.5
2012	25.6
2013	25.9
2014	26
2015	26
2016	26
2017	26
2018	26
2019	26.1