Year	% gross
1973	2.2579300403595
1974	2.43983006477356
1975	2.65518999099731
1976	2.92333006858826
1977	3.1033399105072
1978	3.32005000114441
1979	3.75096011161804
1980	4.15719985961914
1981	4.45114994049072
1982	4.69726991653442
1983	4.72444009780884
1984	4.83041000366211
1985	4.88438987731934
1986	5.06432008743286
1987	5.37040996551514
1988	5.47188997268677
1989	5.69395017623901
1990	5.82151985168457
1991	6.0489501953125
1992	6.36209011077881
1993	7.19729995727539
1994	8.2318696975708
1995	9.18000984191895
1996	10.0881595611572
1997	11.6132497787476
1998	12.3867597579956
1999	13.4584999084473
2000	14.2417697906494
2001	15.0887002944946
2002	17.0027198791504
2003	18.8319301605225
2004	20.7189102172852
2005	22.1083698272705
2006	23.8573799133301
2007	25.3016891479492
2008	26.2663497924805
2009	27.802209854126
2010	29.7987499237061
2011	31.5734806060791
2012	34.2885398864746
2013	37.3112487792969
2014	45.2480392456055
2015	48.2469787597656
2016	50.5842704772949
2017	51.3292999267578
2018	52.3691291809082
2019	54.7757987976074
2020	57.8570213317871
2021	61.1892013549805
2022	63.8731994628906