Year	% gross
1971	8.35149955749512
1972	9.16609954833984
1973	9.75527000427246
1974	10.237509727478
1975	10.7940502166748
1976	11.4158096313477
1977	12.3126401901245
1978	12.810079574585
1979	13.3443298339844
1980	13.928560256958
1981	14.4170703887939
1982	15.7445096969604
1983	16.1732292175293
1984	16.8878593444824
1985	17.3276901245117
1986	17.474100112915
1987	16.8751602172852
1988	16.3347206115723
1989	15.8468704223633
1990	14.9991703033447
1991	14.76233959198
1992	15.2615900039673
1993	16.7716903686523
1994	20.1287994384766
1995	22.6126899719238
1996	25.4819602966309
1997	27.4583396911621
1998	32.5549392700195
1999	36.7241592407227
2000	41.7581405639648
2001	47.5121116638184
2002	53.7503700256348
2003	63.4678001403809
2004	71.9198989868164
2005	77.3821792602539
2006	78.9253616333008
2007	78.5397872924805
2008	75.5398864746094
2009	71.8816833496094
2010	70.1805801391602
2011	68.6345596313477
2012	69.2699966430664
2013	64.8775482177734
2014	59.8906784057617
2015	56.1109008789062
2016	55.264591217041
2017	55.7077713012695
2018	56.4620208740234
2019	58.2803192138672
2020	60.913200378418
2021	63.0113105773926