Year	% gross
1971	26.6721096038818
1972	34.5742301940918
1973	36.7436714172363
1974	39.3389015197754
1975	43.2214393615723
1976	46.3750495910645
1977	49.0367088317871
1985	45.0437889099121
1988	51.3365211486816
1990	57.4681510925293
1991	58.3645095825195
1992	61.1501884460449
1993	65.4833068847656
1994	69.8911437988281
1995	71.8156661987305
1997	75.1805725097656
1999	78.9448318481445
2000	79.6981964111328
2001	79.3983612060547
2002	79.6945495605469
2003	79.2627563476562
2004	78.5519409179688
2005	77.5447311401367
2006	78.4934921264648
2007	78.0802764892578
2008	81.5289993286133
2009	83.8232498168945
2010	83.9020462036133
2011	88.1207733154297
2012	91.7013168334961
2013	90.8647079467773
2014	91.7429580688477
2015	88.1429824829102
2016	85.4874420166016
2017	84.7548294067383
2020	87.0725479125977