Year	% gross
1970	47.2211494445801
1971	50.0417404174805
1972	52.565128326416
1973	52.1530303955078
1974	52.0128593444824
1975	53.624641418457
1976	57.7084312438965
1977	57.288459777832
1978	58.7193298339844
1979	60.9856986999512
1980	63.5323295593262
1981	66.1803512573242
1982	68.7990112304688
1983	71.0551986694336
1984	68.3790512084961
1991	81.0284423828125
1992	84.1517333984375
1993	84.2620315551758
1994	81.0128707885742
1998	73.0473709106445
1999	73.4982299804688
2000	71.4279937744141
2001	72.8467636108398
2002	74.660026550293
2003	76.9945373535156
2004	80.8730316162109
2005	84.3957901000977
2006	89.1383819580078
2007	90.6473693847656
2008	92.5797882080078
2009	95.9598922729492
2010	98.4364013671875
2011	100.902526855469
2012	106.740913391113
2013	105.794052124023
2014	99.4518890380859
2015	106.726997375488
2016	94.1500930786133
2017	92.5971603393555
2018	92.425537109375
2019	91.2207794189453
2020	90.0184326171875