Year	% gross
1971	19.5742702484131
1972	19.84202003479
1973	19.3724002838135
1974	21.2542400360107
1975	21.4157199859619
1976	23.8913707733154
1977	26.2363891601562
1978	30.8135604858398
1979	33.3448905944824
1980	33.9480285644531
1985	32.4284286499023
1986	30.984260559082
1987	29.9478302001953
1988	30.6236705780029
1989	32.0776786804199
1990	33.697868347168
1991	36.1819381713867
1992	39.6834907531738
1993	43.2128791809082
1994	45.4452705383301
1995	48.3752708435059
1996	53.0244407653809
1997	57.8792686462402
1998	61.0796012878418
1999	76.3470306396484
2000	80.4116897583008
2001	84.3506774902344
2002	90.6283569335938
2003	97.9474334716797
2004	101.149261474609
2005	99.7067489624023
2006	96.8832015991211
2007	92.5184707641602
2008	87.9278411865234
2009	87.4364318847656
2010	88.8150329589844
2011	87.0713119506836
2012	84.2743988037109
2013	80.5351715087891
2014	79.2230606079102
2015	81.0175628662109
2016	83.7539215087891
2017	87.0724105834961
2018	92.0438690185547
2019	95.3236923217773
2020	101.560722351074
2021	111.16478729248
2022	108.326881408691