Year	% gross
1970	6.32121992111206
1971	7.78532981872559
1972	11.3160200119019
1973	13.2877798080444
1974	13.9697999954224
1975	14.0871496200562
1976	16.4326992034912
1977	17.3279590606689
1978	17.7986106872559
1979	18.2110004425049
1980	19.2183208465576
1981	20.238109588623
1982	22.162769317627
1983	23.6828804016113
1984	21.38623046875
1985	25.9411506652832
1986	26.8311500549316
1987	26.3394603729248
1988	27.2127990722656
1989	28.2089900970459
1990	29.3866004943848
1991	32.0973014831543
1992	31.8504390716553
1993	32.0275917053223
1994	32.5002708435059
1995	34.321949005127
1996	35.7715187072754
1997	84.0611877441406
1998	40.4709205627441
1999	45.9015197753906
2000	45.6547317504883
2001	58.1513481140137
2002	61.2214584350586
2004	66.0460433959961
2005	71.754150390625
2006	74.1732330322266
2008	75.5339202880859
2009	77.4598999023438
2010	77.4385986328125
2011	77.9386367797852
2012	77.5136337280273
2013	79.3289337158203
2014	80.5448837280273
2015	79.3082122802734
2016	78.054931640625
2017	80.5481567382813
2018	97.9365081787109
2019	95.635498046875
2020	97.1678695678711
2021	95.2350387573242