Year	% of profit
2005	49.32941176470589
2006	46.35555555555556
2007	45.93333333333333
2008	43.68421052631579
2009	43.04210526315789
2010	43.07368421052632
2011	42.154999999999994
2012	42.72
2013	42.67
2014	43.07
2015	42.449999999999996
2016	42.339999999999996
2017	41.39
2018	41.474999999999994
2019	41.72500000000001