Year	% gross
1970	32.3242416381836
1971	32.4184989929199
1972	33.7545890808105
1973	34.2379989624023
1974	34.4115600585938
1975	35.8553886413574
1976	37.823429107666
1977	36.9972991943359
1978	37.370361328125
1979	36.8020515441895
1980	37.1089401245117
1981	37.6787109375
1982	38.2803382873535
1983	38.745288848877
1984	39.2154197692871
1985	39.5857391357422
1986	39.9152603149414
1987	40.572338104248
1988	41.2967414855957
1989	41.9536781311035
1990	42.4680290222168
1991	43.6663093566895
1992	45.2961082458496
1993	47.7971496582031
1994	49.8983917236328
1995	51.2782287597656
1996	52.6038093566895
1997	53.5234603881836
1998	52.9099998474121
1999	54.5432510375977
2000	55.6383399963379
2001	57.0228614807129
2002	58.4543991088867
2003	59.9692306518555
2004	61.3122291564941
2005	62.555419921875
2006	63.8426818847656
2007	64.806396484375
2008	65.637580871582
2009	66.5159683227539
2010	67.4424133300781
2011	68.58203125
2012	69.1296081542969
2013	69.3954620361328
2014	70.0388107299805
2015	70.1511001586914
2016	70.5241165161133
2017	70.3496398925781
2018	70.4630584716797
2019	70.9511795043945
2020	70.9012832641602
2021	70.7088012695312
2022	70.6961898803711