Year	% gross
1975	45.5463485717773
1977	55.5599899291992
1978	58.8113899230957
1979	62.8392181396484
1981	74.3679275512695
1982	73.6383285522461
1983	75.2350463867188
1984	77.9167327880859
1985	81.8393173217773
1986	78.061408996582
1987	77.7824020385742
1988	77.5806503295898
1989	78.7951736450195
1990	77.4203186035156
1991	79.6531219482422
1992	79.1506195068359
1993	78.3644638061523
1994	79.8672027587891
1995	81.8358383178711
1996	83.7484436035156
1997	84.8373184204102
1998	87.0390625
1999	79.3327713012695
2000	78.0745010375977
2001	72.8012466430664
2002	72.6000289916992
2003	68.8869705200195
2004	68.4324569702148
2005	69.3521575927734
2006	69.4444808959961
2007	68.2940216064453
2008	63.3202095031738
2009	66.4341125488281
2010	61.5229682922363
2012	61.3759613037109
2013	60.1982383728027
2014	63.9645690917969
2015	62.5131797790527
2016	54.4659309387207
2017	58.6055183410645
2018	54.7019081115723
2019	58.0322189331055
2020	63.0581092834473
2021	60.1057395935059