Year	% gross
1970	26.8653907775879
1971	32.8122482299805
1972	38.9727783203125
1973	45.0500411987305
1974	46.9312286376953
1975	47.2046012878418
1976	48.7826995849609
1977	49.9319686889648
1978	48.3516387939453
1979	44.6672706604004
1980	39.6370391845703
1981	37.1408996582031
1982	34.335620880127
1983	32.9442710876465
1984	32.832950592041
1985	34.2978096008301
1986	35.565788269043
1987	38.0631484985352
1988	39.784610748291
1989	40.6372413635254
1990	40.8908386230469
1991	42.8171882629395
1992	45.0481491088867
1993	46.8766899108887
1994	47.5943298339844
1995	49.5386505126953
1996	52.4294013977051
1997	54.7214508056641
1998	56.4896087646484
1999	58.0186195373535
2000	59.0433692932129
2001	61.2516899108887
2002	62.2591590881348
2003	63.7227516174316
2004	66.5517501831055
2005	68.7509384155273
2006	71.3365478515625
2007	75.0454406738281
2008	77.79638671875
2009	82.0977630615234
2010	84.0197982788086
2011	85.370002746582
2012	85.9654693603516
2013	87.0246734619141
2014	86.372428894043
2015	86.5217666625977
2016	85.7511901855469
2017	85.8525466918945
2018	86.4668807983398
2019	87.9241104125977
2020	88.7422103881836
2021	89.3636474609375
2022	89.9191284179688