Year	% gross
1971	46.7463493347168
1972	44.0028610229492
1973	58.7264213562012
1974	57.7701187133789
1975	81.912956237793
1976	71.0866775512695
1977	73.2739410400391
1978	66.3665390014648
1979	67.7063293457031
1980	73.5486068725586
1981	70.527961730957
1982	70.0920181274414
1983	70.0101013183594
1984	68.5293579101563
1985	67.1619415283203
1986	68.2898330688477
1987	71.4141387939453
1988	73.5804061889648
1989	102.717109680176
1990	102.831832885742
1991	104.405052185059
1992	105.468338012695
1993	108.150253295898
1994	110.921081542969
1995	103.273971557617
1996	103.959320068359
1997	105.838737487793
1998	103.599166870117
1999	104.604370117188
2000	102.461418151855
2001	102.072540283203
2002	101.846588134766
2003	98.9817123413086
2004	97.0197296142578
2005	96.6666717529297
2006	100.915489196777
2007	108.355659484863
2008	108.907897949219
2009	107.650703430176
2010	115.019462585449
2011	118.45915222168
2012	120.60009765625
2013	112.079879760742
2014	107.119361877441
2015	109.810707092285
2016	111.337867736816
2017	108.31086730957
2018	110.813232421875
2019	111.809272766113
2020	112.488929748535