Year	% gross
1970	0.407260000705719
1972	0.486250013113022
1974	0.576349973678589
1976	0.56274002790451
1977	0.68283998966217
1978	0.571839988231659
1979	0.843659996986389
1980	0.855769991874695
1981	0.85631000995636
1982	1.60869002342224
1983	1.77557003498077
1984	1.92876994609833
1985	2.11683988571167
1986	2.08369994163513
1987	1.70293998718262
1988	1.25811004638672
1989	1.23726999759674
1990	1.396360039711
1999	3.54254007339478
2000	3.5278000831604
2001	4.33755016326904
2002	3.92266011238098
2003	3.96730995178223
2004	3.6174099445343
2005	4.22313022613525
2006	5.068039894104
2007	5.51988983154297
2008	6.25226020812988
2009	8.04370021820068
2011	11.0679998397827
2012	11.4139995574951
2013	11.460000038147
2014	11.5129995346069
2015	12.8900003433228
2016	14.1709995269775
2017	15.1429996490479
2018	16.1469993591309
2019	18.8640003204346
2020	20.0020008087158
2021	21.068000793457
2022	20.8439998626709