Year	% of profit
2005	47.4
2006	48.339999999999996
2007	48.126666666666665
2008	47.87999999999999
2009	44.35999999999999
2010	43.446666666666665
2011	43.18666666666666
2012	42.86
2013	39.80588235294118
2014	36.570588235294125
2015	36.56470588235294
2016	36.95882352941176
2017	36.96470588235294
2018	36.629411764705885
2019	36.71176470588235