Year	% of profit
2005	47.6
2006	47.6
2007	47.6
2008	44.5
2009	44.5
2010	44.8
2011	42.7
2012	42.7
2013	41.3
2014	41.3
2015	41.3
2016	41.3
2017	41.3
2018	41.3
2019	41.3