Year	% gross
1979	4.50764989852905
1980	4.7842001914978
1982	5.00298023223877
1983	4.84152984619141
1984	5.60373020172119
1985	6.49134016036987
1988	8.74131011962891
1989	7.68317985534668
1998	21.9349594116211
1999	23.4450607299805
2000	25.952709197998
2001	23.5427398681641
2002	25.0217609405518
2003	25.9789505004883
2004	26.0082893371582
2005	23.4078998565674
2006	24.5305995941162
2007	25.4117698669434
2008	28.3657398223877
2009	30.2766609191895
2010	30.941499710083
2011	30.6790008544922
2012	31.6359996795654
2013	32.523998260498
2014	33.1689987182617
2015	39.2089996337891
2016	42.8400001525879
2017	40.556999206543
2018	40.8899993896484
2019	37.9179992675781
2020	36.9780006408691
2021	35.4930000305176
2022	34.7729988098145