Year	% gross
1970	1.43621003627777
1971	1.42830002307892
1972	1.46131002902985
1973	1.50789999961853
1974	1.65576994419098
1975	1.80287003517151
1976	1.98951995372772
1977	2.13481998443604
1978	2.39280009269714
1979	2.9618399143219
1980	3.49013996124268
1981	4.02194976806641
1982	4.30858993530273
1983	4.29120016098022
1984	4.38478994369507
1985	4.47610998153687
1986	4.81931018829346
1987	5.14364004135132
1988	5.08846998214722
1989	5.20413017272949
1990	5.20266008377075
1991	5.22519016265869
1992	5.28400993347168
1993	5.51446008682251
1994	6.40206003189087
1995	7.31625986099243
1996	8.12648963928223
1997	9.11439990997314
1998	9.84689044952393
1999	10.6683397293091
2000	11.3893899917603
2001	12.5238199234009
2002	14.3112602233887
2003	16.2714290618896
2004	18.0527591705322
2005	19.473970413208
2006	20.8936100006104
2007	21.8883094787598
2008	22.634220123291
2009	23.9603500366211
2010	25.6960391998291
2011	27.1837692260742
2012	29.3779602050781
2013	31.8981800079346
2014	39.3247985839844
2015	41.9544982910156
2016	43.7650184631348
2017	44.5337295532227
2018	45.4930000305176
2019	47.6410903930664
2020	51.0297012329102
2021	54.590518951416
2022	57.6366996765137