Year	% gross
1971	0.414130002260208
1972	0.406170010566711
1973	0.480239987373352
1974	0.591539978981018
1975	0.804319977760315
1976	1.03984999656677
1977	1.07152998447418
1978	1.5898699760437
1979	1.70051002502441
1986	5.28317022323608
1987	5.72378015518188
1988	6.25813007354736
1989	6.96487998962402
1990	7.92002010345459
1991	7.61118984222412
1992	7.70412015914917
1993	8.19670963287354
1994	8.4882698059082
1995	9.06657981872559
1997	9.29423046112061
1998	7.48542976379395
1999	7.85096979141235
2000	8.43686962127686
2001	8.93132972717285
2002	9.18140983581543
2003	9.57248973846436
2004	10.0710802078247
2005	10.4388799667358
2006	11.4227199554443
2007	11.0909299850464
2008	12.4574604034424
2009	12.5078601837158
2010	13.5428695678711
2011	15.505069732666
2012	18.5673198699951
2013	22.0988693237305
2014	24.9698104858398
2015	27.9086303710938
2016	30.748420715332
2017	32.9660491943359
2018	35.1137084960938
2019	38.26416015625
2020	40.8443298339844
2021	44.9113082885742
2022	49.1333618164062