Year	% of profit
2005	47.23823529411765
2006	45.35714285714286
2007	45.04
2008	44.37142857142858
2009	43.55142857142858
2010	42.8
2011	42.14857142857142
2012	42.459999999999994
2013	42.86842105263159
2014	43.107894736842105
2015	42.492105263157896
2016	42.25526315789474
2017	41.71578947368422
2018	41.626315789473686
2019	41.63157894736842