Year	% gross
1971	87.5298461914062
1976	90.1950531005859
1981	93.508918762207
1982	92.1323089599609
1983	93.8151779174805
1984	94.2479400634766
1985	96.1712493896484
1986	99.6479568481445
1987	100.917259216309
1988	102.033920288086
1989	102.083633422852
1990	103.100128173828
1991	102.758598327637
1992	103.182708740234
1993	103.542419433594
1994	104.510581970215
1995	105.025390625
1996	105.034111022949
1997	104.722023010254
1998	97.527099609375
1999	98.3134918212891
2000	98.6123428344727
2001	98.8608627319336
2002	98.9512710571289
2003	99.3974533081055
2004	99.2856369018555
2005	100.199432373047
2006	100.416679382324
2007	100.102569580078
2008	100.126129150391
2009	100.594093322754
2010	100.263969421387
2011	99.6729583740234
2012	100.108726501465
2013	101.173210144043
2014	101.304809570312
2015	101.411582946777
2016	100.227989196777
2017	100.337898254395
2018	100.692596435547
2019	101.543632507324
2020	101.690559387207
2021	102.307662963867
2022	101.458000183105