Year	% gross
1971	57.4176406860352
1972	61.0299491882324
1973	61.1224594116211
1976	65.4526596069336
1977	98.5128784179688
1978	98.2604675292969
1979	101.957626342773
1980	101.784248352051
1981	102.542976379395
1982	100.142539978027
1983	97.678840637207
1984	96.311637878418
1985	96.0425491333008
1986	99.3149337768555
1988	101.345771789551
1990	96.6467971801758
1991	95.7049407958984
1992	93.2525787353516
1993	98.9552688598633
1994	102.33553314209
1995	103.49210357666
1996	107.036521911621
1997	107.925430297852
1998	110.021209716797
1999	108.336952209473
2000	106.731010437012
2001	105.038230895996
2002	107.94441986084
2003	111.48755645752
2004	113.803970336914
2005	115.79541015625
2006	116.550247192383
2007	116.699493408203
2008	117.957847595215
2009	119.460418701172
2010	121.50936126709
2011	120.712997436523
2012	119.397003173828
2013	118.855003356934
2014	117.478996276855
2015	114.179000854492
2016	110.410003662109
2017	107.500999450684
2018	104.568000793457
2019	102.568000793457
2020	101.189002990723
2021	100.343002319336
2022	97.2229995727539