Year	% gross
1973	4.49758005142212
1977	3.73291993141174
1978	4.6880898475647
1979	6.31731986999512
1980	8.31241989135742
1981	7.83687019348145
1982	10.6897401809692
1983	11.4281597137451
1985	9.8572998046875
1986	9.55206966400146
1987	7.2617301940918
1990	9.32590961456299
1991	9.34805965423584
1992	8.83462047576904
1993	8.92827987670898
1994	9.09533977508545
1995	9.36102962493896
1999	6.71548986434937
2000	7.84781980514526
2001	8.70831966400146
2002	10.5539302825928
2004	13.084659576416
2005	16.064920425415
2006	18.52659034729
2007	21.5984401702881
2008	23.9732494354248
2009	26.657169342041
2010	28.583890914917
2011	28.6842308044434
2012	27.7776107788086
2013	36.9352493286133
2014	36.1442604064941
2015	36.305419921875
2016	28.6609992980957
2017	38.9206504821777
2018	30.6030006408691
2019	32.2789993286133
2020	42.7169990539551
2021	33.4799995422363
2022	38.9370002746582