Year	% gross
1970	52.1231307983398
1971	52.013599395752
1972	53.3818397521973
1973	54.6456298828125
1974	55.2678985595703
1975	56.7694702148438
1976	58.3715705871582
1977	59.6763000488281
1978	60.5524597167969
1979	63.3842010498047
1980	65.0742568969727
1981	65.6923980712891
1982	66.8142776489258
1983	67.6973495483398
1984	68.6835327148438
1985	68.9159622192383
1986	69.9040908813477
1987	71.0947036743164
1988	71.5559310913086
1989	72.0091018676758
1990	73.0443725585938
1991	73.7704391479492
1992	71.9437103271484
1993	72.7230377197266
1994	74.9791030883789
1995	74.4149017333984
1996	75.0869369506836
1997	77.5226211547852
1998	78.6819000244141
1999	80.0106964111328
2000	80.822151184082
2001	81.7341384887695
2002	83.1306304931641
2003	84.3302383422852
2004	85.0923614501953
2005	86.0097503662109
2006	87.0692291259766
2007	87.436149597168
2008	88.2693710327148
2009	88.5058364868164
2010	89.0725326538086
2011	88.2158432006836
2012	90.2951965332031
2013	89.0126495361328
2014	88.2342376708984
2015	87.8390121459961
2016	87.2305221557617
2017	87.105842590332
2018	87.378547668457
2019	87.8339004516602
2020	88.2764511108398
2021	88.2656021118164
2022	87.1337509155273