Year	% of profit
2005	47.864444444444445
2006	47.2868131868132
2007	46.60109890109893
2008	46.086813186813195
2009	44.05760869565219
2010	43.01195652173913
2011	43.05434782608697
2012	42.23404255319151
2013	41.97941176470589
2014	41.49215686274511
2015	41.48333333333334
2016	41.188235294117646
2017	41.15490196078431
2018	41.16764705882351
2019	41.48823529411763