Year	% gross
1971	0.175050005316734
1972	0.182270005345345
1973	0.150370001792908
1974	0.324470013380051
1975	0.301609992980957
1980	0.36761000752449
1981	0.435930013656616
1982	0.869920015335083
1983	1.14216995239258
1984	1.35044002532959
1985	1.41263997554779
1986	1.42455995082855
1988	1.32416999340057
1990	1.10994005203247
1993	1.31324994564056
1994	1.30394005775452
1995	1.63111996650696
1996	2.36831998825073
1997	2.52182006835938
1998	2.0095899105072
1999	2.31708002090454
2000	2.65777993202209
2001	3.0681300163269
2002	4.10284996032715
2003	4.86330986022949
2004	5.65859985351562
2005	7.70166015625
2006	8.90923023223877
2007	11.4247303009033
2008	13.2458600997925
2009	16.4126300811768
2010	16.872989654541
2011	17.673999786377
2012	17.507999420166
2013	19.0970001220703
2014	18.6110000610352
2015	18.1809997558594
2016	17.1159992218018
2017	15.4379997253418
2018	14.5240001678467
2019	13.7659997940063
2020	12.5839996337891
2021	12.4589996337891