Year	% of profit
2005	48.55
2006	48.00714285714285
2007	47.76785714285713
2008	46.36785714285713
2009	46.34285714285714
2010	45.92857142857144
2011	45.63103448275863
2012	45.56896551724138
2013	46.86451612903225
2014	47.16129032258065
2015	46.81935483870967
2016	45.403225806451616
2017	46.11290322580645
2018	46.39354838709678
2019	46.470967741935496