Year	% gross
1970	27.8571605682373
1971	28.9484004974365
1972	32.0522117614746
1973	34.3168296813965
1974	39.4207382202148
1975	40.3658103942871
1976	43.0512390136719
1977	46.0101509094238
1978	47.1282806396484
1979	47.9498710632324
1980	48.6144599914551
1981	48.932731628418
1982	50.0356712341309
1983	50.7773399353027
1984	51.6482086181641
1985	52.1702194213867
1986	53.3404884338379
1987	54.0931816101074
1988	54.7624702453613
1989	55.1628684997559
1990	55.2983818054199
1991	56.0433311462402
1992	57.1981506347656
1993	57.4950790405273
1994	58.6595611572266
1995	60.1303405761719
1996	62.2125282287598
1997	63.3050994873047
1998	65.6307678222656
1999	67.7356796264648
2000	69.4409332275391
2001	71.0780868530273
2002	83.1154632568359
2003	80.4058303833008
2004	82.4506301879883
2005	82.7453079223633
2006	77.5371322631836
2007	82.4514083862305
2008	83.6647262573242
2009	84.8461608886719
2010	86.0046081542969
2011	86.5952682495117
2012	86.3966522216797
2013	91.580810546875
2014	91.6321716308594
2015	92.0031661987305
2016	93.287841796875
2017	93.9645767211914
2018	94.9962997436523
2019	94.6800994873047
2020	93.9455184936523
2021	93.6048431396484
2022	94.0621032714844