Year	% gross
2001	19.4089107513428
2002	19.3466796875
2003	22.6527900695801
2004	22.3258590698242
2005	22.1262607574463
2006	24.5902404785156
2007	24.0244102478027
2008	27.7355308532715
2009	35.5634803771973
2010	31.7606201171875
2011	35.6315612792969
2012	38.1904182434082
2013	42.7753715515137
2014	43.2010917663574
2015	44.7662582397461
2016	45.0923004150391
2017	46.6257591247559
2018	47.3999404907227