Year	% of profit
2005	43.136
2006	41.557692307692314
2007	40.20727272727273
2008	39.048214285714266
2009	38.175000000000004
2010	37.36249999999999
2011	36.7155172413793
2012	36.5322033898305
2013	36.95483870967742
2014	37.26451612903226
2015	36.83064516129032
2016	36.63709677419356
2017	36.34354838709678
2018	36.12063492063491
2019	35.91111111111111