Year	% gross
1971	20.0001106262207
1972	23.0602798461914
1973	25.9616794586182
1974	27.8683700561523
1975	28.2781105041504
1976	29.6043796539307
1977	29.8559799194336
1978	31.8334197998047
1979	28.3784103393555
1980	28.7279605865479
1981	28.5906105041504
1982	28.456750869751
1983	28.9033393859863
1984	28.8124809265137
1985	28.4415798187256
1986	28.0615997314453
1987	28.3408393859863
1988	29.6852397918701
1989	31.5380897521973
1990	34.6175994873047
1991	37.8283309936523
1992	40.2165603637695
1993	44.1690216064453
1994	45.4964599609375
1995	45.3761405944824
1996	47.7733116149902
1998	52.9263801574707
1999	56.4665908813477
2000	58.3664016723633
2001	61.3673095703125
2002	64.2234725952148
2003	68.1712493896484
2004	74.9665069580078
2005	80.8124618530273
2006	78.5057678222656
2007	78.243293762207
2008	74.8606262207031
2009	73.1106262207031
2010	72.4951477050781
2011	75.9300231933594
2012	77.7465515136719
2013	80.4186782836914
2014	81.3143615722656
2015	83.300407409668
2016	82.1714935302734
2017	81.3220062255859
2018	81.1405487060547
2019	81.6945877075195
2020	82.6643295288086
2021	83.982292175293
2022	84.5866088867188