Year	% gross
1971	52.4140205383301
1972	56.2873687744141
1973	62.3501205444336
1974	67.1790008544922
1975	72.5080718994141
1976	77.4664077758789
1977	80.4184036254883
1978	81.7385406494141
1979	82.4853210449219
1980	81.1400833129883
1981	84.0764236450195
1982	83.9827880859375
1983	84.8133773803711
1984	86.7957992553711
1985	93.7127990722656
1986	94.9225692749023
1987	96.4409408569336
1988	94.3107528686523
1995	85.0329284667969
1996	87.0482406616211
1998	81.8491821289063
2012	112.511001586914
2013	109.419158935547
2014	104.768203735352
2015	104.616630554199
2016	105.826843261719
2017	105.34049987793
2018	103.853218078613
2019	99.2923889160156
2020	91.5473098754883