Year	% gross
1971	28.2981204986572
1972	27.3321399688721
1973	23.8982696533203
1974	21.613639831543
1975	21.4743804931641
1976	20.9602794647217
1977	20.684419631958
1978	21.8154296875
1979	21.8205509185791
1980	23.3614501953125
1981	25.1937294006348
1982	29.0929794311523
1983	35.7137718200684
1984	40.613468170166
1985	45.0958518981934
1986	49.3451118469238
1987	55.5698318481445
1988	62.8914985656738
1989	63.9656295776367
1990	64.2292633056641
1991	65.3597183227539
1992	62.7476806640625
1993	62.5854682922363
1995	49.0285186767578
1996	38.8350410461426
1997	40.8526611328125
1998	49.2538909912109
1999	58.6382484436035
2000	60.7197418212891
2001	63.5211181640625
2002	70.450569152832
2003	76.1811599731445
2004	81.4659194946289
2005	86.9328231811523
2006	110.781700134277
2007	124.006248474121
2008	127.552742004395
2009	135.512664794922
2010	139.46711730957
2011	140.372177124023
2012	135.609924316406
2013	130.219497680664
2014	125.404472351074
2015	120.036262512207
2016	116.194183349609
2017	111.118583679199
2018	107.725219726562
2019	104.938018798828
2020	105.158096313477
2021	100.607002258301
2022	103.901000976562