Year	% gross
1971	3.55503010749817
1972	4.50494003295898
1973	5.1746301651001
1974	6.04468011856079
1975	6.17368984222412
1976	7.89462995529175
1977	8.84422016143799
1978	10.1729803085327
1979	8.89373970031738
1980	9.04489040374756
1981	9.61009979248047
1982	10.4845199584961
1983	11.3820695877075
1984	11.6798000335693
1985	13.2950897216797
1986	14.0174503326416
1987	14.9348602294922
1988	15.9747896194458
1989	16.4512500762939
1990	13.7532196044922
1992	17.7965908050537
1993	16.6364498138428
1994	18.1403903961182
1995	22.3479690551758
1996	23.0927696228027
1997	21.1086196899414
1999	19.735969543457
2001	18.3076305389404
2002	19.2664794921875
2003	19.5823497772217
2004	19.9742107391357
2014	54.0167083740234
2015	58.7037200927734
2016	57.7827606201172
2017	55.13330078125
2018	52.1134605407715
2019	50.4700584411621
2020	53.7298583984375
2021	61.558048248291