Year	% gross
1970	31.4933700561523
1971	31.5467700958252
1972	31.8464107513428
1973	32.1703300476074
1974	32.2482414245605
1975	32.3983497619629
1976	32.4032096862793
1977	33.1360282897949
1978	33.544490814209
1979	34.512378692627
1980	35.874439239502
1981	36.7418785095215
1982	38.4199600219727
1983	39.5390281677246
1984	41.6635589599609
1985	42.4725494384766
1986	42.9995918273926
1987	42.8261489868164
1988	42.6136512756348
1989	42.5628318786621
1990	44.3763389587402
1991	46.7045707702637
1992	48.9489784240723
1993	50.634090423584
1994	50.7879981994629
1995	50.6750984191895
1996	50.5968208312988
1997	50.5346488952637
1998	48.8081588745117
1999	47.1244697570801
2000	48.4305992126465
2001	48.3769989013672
2002	49.235969543457
2003	49.6847381591797
2004	51.156681060791
2005	52.6940803527832
2006	53.8637390136719
2007	55.4042015075684
2008	57.1602897644043
2009	56.140998840332
2010	58.8855018615723
2011	60.9661712646484
2012	63.1964302062988
2013	62.2687683105469
2014	66.1021194458008
2015	66.3353271484375
2016	67.8043823242188
2017	66.6691436767578
2018	67.9896774291992
2019	67.9428787231445
2020	70.1754608154297
2021	72.8496704101562
2022	72.4073715209961