Year	% of profit
2005	50.36956521739131
2006	50.31739130434782
2007	49.92826086956522
2008	49.5304347826087
2009	48.199999999999996
2010	47.25
2011	47.88478260869565
2012	46.1468085106383
2013	44.39019607843138
2014	43.50588235294118
2015	43.47450980392157
2016	43.16078431372549
2017	43.311764705882354
2018	43.26274509803922
2019	43.87843137254902