Year	% of profit
2005	44.93636363636364
2006	43.154545454545456
2007	42.309090909090905
2008	41.98181818181818
2009	41.38181818181818
2010	40.70909090909092
2011	40.78181818181819
2012	41.40909090909091
2013	39.27272727272727
2014	39.099999999999994
2015	39.37272727272727
2016	38.981818181818184
2017	38.99090909090909
2018	38.46363636363637
2019	36.61818181818182