Year	% gross
1970	40.0795402526855
1971	40.6065101623535
1972	42.1084403991699
1973	42.9295082092285
1974	43.0557518005371
1975	46.8028602600098
1976	49.6526107788086
1977	50.6250801086426
1978	52.8500213623047
1979	53.5495986938477
1980	55.5458488464355
1981	58.4104385375977
1982	60.2637481689453
1983	60.764289855957
1984	62.273021697998
1985	63.3151016235352
1986	65.3105163574219
1987	68.7947235107422
1988	72.361457824707
1989	75.0044174194336
1990	79.4027404785156
1991	81.4630584716797
1992	86.5718688964844
1993	87.8849716186523
1994	89.1683502197266
1995	90.8778915405273
1996	90.4007415771484
1997	84.7834014892578
1998	79.1225814819336
1999	79.9295425415039
2000	81.7297897338867
2001	83.8329696655273
2002	86.0136566162109
2003	88.2809295654297
2004	90.4990615844727
2005	92.9355087280273
2006	94.0188064575195
2007	94.9579620361328
2008	95.7639236450195
2009	96.5004501342773
2010	97.0144271850586
2011	98.0181274414062
2012	99.1838302612305
2013	100.535453796387
2014	100.270210266113
2015	100.465599060059
2016	100.285469055176
2017	100.135330200195
2018	100.291236877441
2019	100.656478881836
2020	101.275451660156
2021	100.664703369141
2022	100.557571411133