Year	% gross
1971	26.5389194488525
1972	27.5468997955322
1974	34.0728988647461
1975	37.003978729248
1976	41.9767913818359
1977	41.8745613098145
1978	42.4206886291504
1979	46.3452796936035
1980	48.8892288208008
1981	50.8060607910156
1982	55.6593589782715
1983	58.482120513916
1984	60.0021286010742
1985	60.9565086364746
1986	61.0929718017578
1987	60.9199600219727
1988	60.389289855957
1989	59.1875801086426
1990	57.5164489746094
1991	56.2364501953125
1992	57.1680183410645
1993	57.2231407165527
1994	58.4806900024414
1995	60.7131385803223
1996	63.5870208740234
1997	65.9833679199219
1998	69.0583419799805
1999	70.1653137207031
2000	70.6133499145508
2001	71.8951110839844
2002	73.4712905883789
2003	75.8402862548828
2004	77.3996505737305
2005	78.1831665039062
2006	79.9940414428711
2007	81.2195129394531
2008	82.901741027832
2009	82.5542221069336
2010	84.0437774658203
2011	85.3095321655273
2012	87.6581420898438
2013	90.5108184814453
2014	94.4455108642578
2015	97.5694808959961
2016	99.0344314575195
2017	101.25789642334
2018	101.561836242676
2019	100.803611755371
2020	97.846549987793
2021	92.8593521118164
2022	92.1142120361328