Year	% gross
1970	5.94834995269775
1973	6.14275979995728
1974	6.40722990036011
1975	6.79460000991821
1976	7.17499017715454
1977	7.37489986419678
1978	7.56097984313965
1979	8.05739974975586
1980	8.57728004455566
1981	8.76523017883301
1982	8.68968963623047
1983	8.46063995361328
1984	8.26307964324951
1985	8.18371963500977
1986	8.49685001373291
1987	8.69188022613525
1988	8.66180992126465
1989	8.7047004699707
1990	8.75979995727539
1991	8.82022953033447
1992	8.99806976318359
1993	9.23266983032227
1994	10.065710067749
1995	10.888409614563
1996	11.7643804550171
1997	13.0838804244995
1998	14.3994598388672
1999	15.7608995437622
2000	17.0365600585938
2001	18.363130569458
2002	20.6925601959229
2003	22.9408798217773
2004	24.8356704711914
2005	26.4342193603516
2006	28.6006507873535
2007	29.9283695220947
2008	31.1711292266846
2009	32.6710395812988
2010	34.6657485961914
2011	36.5250015258789
2012	39.2313499450684
2013	42.1076889038086
2014	48.7648887634277
2015	51.737979888916
2016	54.1234893798828
2017	55.8889999389648
2018	57.7756881713867
2019	60.1925392150879
2020	63.417179107666
2021	66.8637008666992
2022	68.8131713867188