Year	% gross
1971	0
1976	6.7167501449585
1977	7.29080009460449
1980	14.9563798904419
1981	15.4226703643799
1982	18.0171604156494
1983	23.1533699035645
1984	25.9948291778564
1985	28.9565906524658
1986	31.7623291015625
1987	32.3147315979004
1988	32.3658409118652
1989	34.80078125
1990	38.4976501464844
1991	37.3034286499023
1992	38.5274696350098
1993	41.7589492797852
1994	40.8636817932129
1995	42.7735900878906
1996	44.9389991760254
1997	45.6420783996582
1998	41.0058708190918
1999	38.1830215454102
2001	33.5701293945312
2002	31.0748691558838
2003	29.2537593841553
2004	32.0311012268066
2005	30.4664096832275
2006	30.624439239502
2007	31.7337493896484
2008	33.9013900756836
2009	34.4635810852051
2010	31.9231491088867
2011	34.0203704833984
2012	35.5400390625
2013	43.420970916748
2014	51.5663185119629
2015	49.8616790771484
2016	47.9673194885254
2017	62.7524185180664
2018	65.8024673461914
2019	70.1104583740234
2020	75.1430206298828
2021	68.1856536865234
2022	77.3432006835938