Year	% gross
1970	4.29116010665894
1971	4.77374982833862
1972	5.37941980361938
1973	5.80445003509521
1974	6.36064004898071
1975	7.26185989379883
1976	7.71060991287231
1977	8.74717044830322
1978	9.02645015716553
1979	9.23423004150391
1980	9.08666038513184
1981	10.3553600311279
1982	10.6621503829956
1983	11.0733098983765
1984	11.5835399627686
1985	11.8408603668213
1986	12.5545997619629
1987	13.044750213623
1988	13.7543697357178
1989	14.2888097763062
1990	14.7004499435425
1991	15.398980140686
1992	16.1204891204834
1993	16.3813800811768
1994	17.0670604705811
1995	17.1475601196289
1996	18.4493103027344
1997	21.6760997772217
1998	24.204740524292
1999	23.6967697143555
2000	25.5096893310547
2001	26.3812599182129
2002	26.5130996704102
2004	29.5034599304199
2005	32.253978729248
2006	34.3662109375
2007	35.4785308837891
2008	37.9448013305664
2009	39.5088005065918
2010	41.529670715332
2011	45.2873306274414
2012	47.4669914245605
2013	50.7474899291992
2014	53.1794395446777
2015	54.7961311340332
2016	57.1437492370605
2017	58.3960418701172
2018	57.3205413818359
2019	56.6663017272949
2020	55.7331085205078
2021	58.3159217834473
2022	59.2901382446289