Year	% gross
1971	37.3445892333984
1972	39.8609504699707
1973	42.7880096435547
1974	45.987720489502
1975	50.2244491577148
1976	55.9000587463379
1977	56.8584594726562
1978	58.3716011047363
1979	50.8316688537598
1980	53.5727882385254
1986	58.0565605163574
1987	65.5005416870117
1988	57.0099182128906
1989	57.489631652832
1990	59.0277481079102
1991	66.9840087890625
1992	77.3100967407227
1993	94.3185272216797
1994	102.231628417969
1995	106.565963745117
1996	110.345077514648
1998	109.199592590332
1999	107.172782897949
2000	108.372886657715
2001	108.49845123291
2002	109.794471740723
2003	108.311233520508
2004	95.0831298828125
2005	96.4346008300781
2006	95.6554183959961
2007	99.3079605102539
2008	101.609558105469
2009	105.083099365234
2010	107.523330688477
2011	108.864181518555
2012	110.332092285156
2013	119.166061401367
2014	114.980697631836
2015	116.871742248535
2016	115.640090942383
2017	117.426628112793
2018	118.456207275391
2019	119.535041809082
2020	118.360000610352
2021	118.324661254883