Year	% gross
1978	0.0474000014364719
1979	0.0256600007414818
1980	0.0306700002402067
1981	0.0372399985790253
1982	0.025450000539422
1983	0.0520499981939793
1984	0.113549999892712
1985	0.376159995794296
1986	0.960280001163483
1987	1.86099994182587
1988	2.6259400844574
1989	2.90566992759705
1990	3.39908003807068
1991	3.46309995651245
1992	3.63513994216919
1993	3.62519001960754
1994	3.57508993148804
1995	4.3707799911499
1996	4.37336015701294
1997	5.46930980682373
1998	7.04358005523682
2003	16.3789291381836
2004	14.2583503723145
2005	16.1530094146729
2006	18.2453193664551
2007	19.1495704650879
2009	19.1318397521973
2010	25.6528797149658
2011	28.754020690918
2013	28.9420795440674
2014	31.9869403839111
2015	34.6656608581543
2016	34.5448112487793
2017	32.8895111083984
2018	34.4240989685059
2019	35.6991691589355
2020	39.407901763916
2021	35.9147987365723