Year	% gross
1970	75.2544479370117
1971	76.8656616210938
1972	79.0622482299805
1973	79.8400192260742
1974	81.9625396728516
1975	80.9695510864258
1976	81.9698028564453
1977	82.517448425293
1978	82.6703262329102
1979	82.9447708129883
1980	83.9825973510742
1981	84.1479797363281
1982	85.0778274536133
1983	87.6900024414062
1984	89.8566970825195
1985	93.2530822753906
1986	93.1101226806641
1988	92.0408172607422
1994	84.1718292236328
1995	81.9917297363281
1996	80.242561340332
1998	78.7187118530273
1999	76.5045623779297
2000	76.7363433837891
2001	76.6721115112305
2002	79.3188934326172
2004	98.7770004272461
2005	109.75318145752
2006	112.544258117676
2007	113.170143127441
2008	115.013221740723
2009	109.693641662598
2010	109.961547851562
2011	110.445487976074
2012	111.376991271973
2013	105.470458984375
2014	106.569458007812
2015	102.919746398926
2016	99.9383163452148
2017	99.3915863037109
2018	98.6719970703125
2019	97.4160003662109
2020	95.9779968261719