Year	% of profit
2005	50.495348837209306
2006	48.275555555555556
2007	46.59333333333333
2008	45.573913043478264
2009	42.97021276595746
2010	41.125531914893614
2011	40.33617021276595
2012	40.29166666666666
2013	39.916326530612245
2014	38.71836734693877
2015	38.58775510204082
2016	37.91428571428571
2017	37.230612244897955
2018	36.68600000000001
2019	36.486