Year	% gross
1970	31.1906204223633
1971	33.1034812927246
1972	35.4712295532227
1973	37.5362281799316
1974	38.5290908813477
1975	38.9797401428223
1976	39.9840202331543
1977	41.2295799255371
1978	41.2689018249512
1979	40.2668190002441
1980	38.7309913635254
1981	38.0334205627441
1982	37.5171699523926
1983	37.6361694335938
1984	38.1249618530273
1985	39.1122512817383
1986	40.1092414855957
1987	41.2444915771484
1988	42.020378112793
1989	42.4209098815918
1990	43.2482604980469
1991	44.5916404724121
1992	45.8940887451172
1993	47.0447387695312
1994	47.6296081542969
1995	48.4474601745605
1996	49.5180397033691
1997	50.5628395080566
1998	51.2904815673828
1999	51.8203811645508
2000	52.8916893005371
2001	54.0987091064453
2002	56.2334899902344
2003	57.1477203369141
2004	58.4271202087402
2005	59.4794807434082
2006	60.0965881347656
2007	62.1135902404785
2008	63.7873687744141
2009	64.9536972045898
2010	66.6882400512695
2011	68.1320571899414
2012	69.0710220336914
2013	70.3321762084961
2014	71.250358581543
2015	71.2641372680664
2016	71.4476165771484
2017	71.0874481201172
2018	71.7654418945312
2019	72.1110687255859
2020	72.8625106811523
2021	73.703727722168
2022	73.9119415283203