Year	% gross
1970	5.13190984725952
1971	5.11794996261597
1972	5.16775989532471
1973	5.23640012741089
1974	5.38906002044678
1975	5.592209815979
1976	5.80168008804321
1977	5.94434976577759
1978	6.12110996246338
1979	6.43540000915527
1980	6.69084978103638
1981	6.8828501701355
1982	6.9369797706604
1983	6.95991992950439
1984	6.99244022369385
1985	7.00638008117676
1986	7.14400005340576
1987	7.26274013519287
1988	7.2207498550415
1989	7.28064012527466
1990	7.33032989501953
1991	7.38892984390259
1992	7.42923021316528
1993	7.53934001922607
1994	7.91185998916626
1995	8.32139015197754
1996	8.95396995544434
1997	9.67152976989746
1998	10.5228300094604
1999	11.4500598907471
2000	12.2731103897095
2001	13.1051397323608
2002	14.3772096633911
2003	15.4674797058105
2004	16.4789505004883
2005	17.396089553833
2006	18.7213592529297
2007	19.7592391967773
2008	20.9469509124756
2009	21.9228591918945
2010	23.2631301879883
2011	25.0380096435547
2012	26.6131801605225
2013	27.7930507659912
2014	30.8172092437744
2015	32.0856781005859
2016	32.863338470459
2017	33.3805885314941
2018	33.9948997497559
2019	35.1770210266113
2020	36.3954315185547
2021	37.8091316223145
2022	38.5306282043457