Year	% gross
1971	3.08177995681763
1972	13.0586204528809
1973	20.0211601257324
1974	27.9009799957275
1975	37.0362815856934
1976	40.0482482910156
1977	44.2124290466309
1978	48.0081214904785
1979	50.8393402099609
1980	52.0670585632324
1981	54.4679183959961
1982	57.2057418823242
1983	61.8935012817383
1984	67.126823425293
1985	72.4567031860352
1986	75.8152008056641
1987	78.5941390991211
1988	80.2694778442383
1989	81.5926971435547
1990	82.4529571533203
1991	83.958740234375
1992	85.7111968994141
1993	87.3089218139648
1994	87.5870132446289
1995	87.346061706543
1996	87.6486892700195
1997	88.2634963989258
1998	88.2964630126953
1999	88.8397521972656
2000	92.6224670410156
2001	93.1300582885742
2002	92.9911499023438
2003	96.4981994628906
2005	96.953971862793
2006	95.9230117797852
2007	93.5471420288086
2008	91.8159637451172
2009	100.969787597656
2011	111.140312194824
2012	103.370300292969
2013	105.94441986084
2014	105.678726196289
2015	104.035346984863
2016	103.313171386719
2017	103.705848693848
2018	101.079902648926
2019	99.6718215942383
2020	92.1976776123047
2021	89.1980285644531
2022	90.096809387207