Year	% gross
1971	3.22130990028381
1972	4.04809999465942
1973	4.36423015594482
1974	4.45031976699829
1975	4.37619018554688
1976	6.12259006500244
1977	7.06246995925903
1978	8.31394004821777
1979	6.66649007797241
1980	6.79285001754761
1981	7.18552017211914
1982	8.46490001678467
1983	8.94888973236084
1984	9.72397994995117
1985	11.4190196990967
1986	11.9480695724487
1987	12.7796497344971
1988	13.8952703475952
1989	13.9278202056885
1990	9.80580043792725
1992	12.2274799346924
1993	11.3946895599365
1994	14.1958703994751
1995	16.8996391296387
1996	17.0667095184326
1997	14.7677202224731
1999	12.8849401473999
2001	11.6674299240112
2002	12.3869104385376
2003	12.3718099594116
2004	12.9015502929688
2014	38.8317604064941
2015	39.9090309143066
2016	36.3322982788086
2017	36.1663208007812
2018	33.7704696655273
2019	33.0658912658691
2020	37.3985290527344
2021	48.5012702941895