Year	% of profit
2005	47.5
2006	45
2007	44.3
2008	44.1
2009	42.3
2010	22
2011	20.7
2012	20.1
2013	31.849999999999998
2014	32.45
2015	32.5
2016	32.5
2017	32.349999999999994
2018	32.15
2019	30.55