Year	% gross
1972	0.804629981517792
1973	0.433219999074936
1978	0.785229980945587
1979	1.11304998397827
1980	1.25514996051788
1981	1.67025005817413
1982	3.01583003997803
1983	3.16111993789673
1984	3.95326995849609
1985	4.70459985733032
1986	6.14945983886719
1988	7.30028009414673
1990	7.09734010696411
1991	7.04456996917725
1992	6.03723001480103
1993	6.2007999420166
1994	6.50411987304688
1995	6.78331995010376
1996	7.3689398765564
1997	7.78273010253906
1998	7.76338005065918
1999	7.38537979125977
2000	7.58874988555908
2001	7.00504016876221
2002	7.03704977035522
2003	7.69131994247437
2004	8.35982036590576
2005	9.27451992034912
2006	10.2295398712158
2007	11.4248199462891
2008	14.5403499603271
2009	17.9041690826416
2010	20.057689666748
2011	21.5416507720947
2012	24.8518371582031
2013	27.9512138366699
2014	31.84352684021
2015	34.9972763061523
2016	39.7293357849121
2017	42.8872718811035
2018	46.682674407959
2019	48.4588165283203
2020	49.2228469848633
2021	49.3228950500488