Year	% of profit
2005	84.05151515151516
2006	86.34117647058824
2007	85.18529411764705
2008	83.57058823529411
2009	83.37058823529412
2010	80.57058823529412
2011	66.75
2012	65.30571428571427
2013	55.51944444444446
2014	49.74999999999999
2015	49.98888888888889
2016	51.35
2017	51.913888888888884
2018	52.12777777777778
2019	52.358333333333334