Year	% gross
1970	37.2875099182129
1971	34.5731201171875
1972	35.4639892578125
1973	36.1685104370117
1974	36.9397583007812
1975	37.3735313415527
1976	37.9306182861328
1977	38.6732482910156
1978	38.7268486022949
1979	38.8040199279785
1980	38.6662101745605
1981	39.1305694580078
1982	39.7072792053223
1983	40.6593399047852
1984	41.2882194519043
1985	41.6828498840332
1986	41.6980285644531
1987	41.4184608459473
1988	41.3820381164551
1989	41.6834716796875
1990	43.020580291748
1991	44.057689666748
1992	44.7181015014648
1993	45.7790794372559
1994	46.3594284057617
1995	47.8308296203613
1996	48.3937797546387
1997	49.6004409790039
1998	50.8849487304688
1999	50.6390914916992
2000	52.4721183776855
2001	53.5034103393555
2002	54.6894683837891
2003	55.781078338623
2004	57.4535217285156
2005	58.5176086425781
2006	59.4373092651367
2007	60.7805404663086
2008	61.229061126709
2009	62.5557518005371
2010	63.6154098510742
2011	64.1535720825195
2012	65.3464126586914
2013	66.1574020385742
2014	67.0873184204102
2015	67.7587585449219
2016	68.3973770141602
2017	69.3045806884766
2018	70.0304870605469
2019	70.6903076171875
2020	70.9832916259766
2021	71.2002716064453
2022	71.3182067871094