Year	% gross
1970	20.5835704803467
1971	20.2922401428223
1972	20.1803493499756
1973	20.9357891082764
1974	20.7116603851318
1975	22.5101795196533
1976	19.3265590667725
1977	18.6141700744629
1978	26.7988300323486
1979	27.9333992004395
1980	26.6934299468994
1981	25.5775394439697
1982	24.6889801025391
1990	53.8600387573242
1993	84.0259017944336
1995	76.3248062133789
1996	80.3246231079102
1997	96.0723724365234
1998	92.2296600341797
1999	94.381591796875
2000	90.9579925537109
2001	92.9905395507813
2002	94.9985885620117
2003	104.723678588867
2004	100.485229492188
2005	100.978538513184
2006	99.4508972167969
2007	96.4454803466797
2008	95.3987884521484
2009	99.1046600341797
2010	104.714241027832
2011	106.406959533691
2012	105.881980895996
2013	104.890830993652
2014	103.204818725586
2015	105.476791381836
2016	104.583168029785
2017	100.660591125488
2018	98.1187896728516
2019	97.7892913818359
2020	102.004051208496
2021	102.004051208496