Year	% gross
1971	82.8266830444336
1972	83.9120483398438
1973	90.1448364257812
1974	89.5074615478516
1975	89.0479507446289
1976	88.6239776611328
1977	88.9999771118164
1978	88.4860076904297
1979	90.1892623901367
1980	91.3338394165039
1981	90.7418670654297
1982	90.7291717529297
1983	93.3822326660156
1984	92.9829406738281
1985	94.5053634643555
1986	95.0752410888672
1987	93.7240600585938
1988	93.1717300415039
1989	94.7369232177734
1990	100.763427734375
1991	103.896812438965
1992	107.365699768066
1993	116.671699523926
1994	127.86604309082
1995	119.331207275391
1996	117.944862365723
1997	118.319747924805
1998	116.646690368652
1999	117.938529968262
2000	114.908950805664
2001	113.152847290039
2002	111.923629760742
2003	112.105567932129
2004	112.29190826416
2005	110.956672668457
2006	111.781593322754
2007	112.333053588867
2008	112.677398681641
2009	112.311187744141
2010	113.700691223145
2011	113.623336791992
2012	113.030731201172
2013	116.302558898926
2014	115.437316894531
2015	116.828620910645
2016	118.199226379395
2017	119.413421630859
2018	119.712867736816
2019	121.861053466797
2020	122.499183654785
2021	121.710456848145