Year	% gross
1971	18.6411094665527
1972	18.3706798553467
1973	17.2646293640137
1974	16.0981693267822
1975	16.1712398529053
1976	16.1583499908447
1977	16.1258907318115
1978	16.9315204620361
1979	17.1573295593262
1980	18.3516292572021
1981	19.8465003967285
1982	22.3578796386719
1983	27.9796504974365
1984	32.5076713562012
1985	36.9315910339355
1986	41.281608581543
1987	47.5185203552246
1988	55.4291610717773
1989	56.8839492797852
1990	57.3024215698242
1991	59.6767997741699
1992	56.4893417358398
1993	56.399341583252
1995	43.6076812744141
1996	35.6426582336426
1997	37.3905601501465
1998	44.3210792541504
1999	51.8794288635254
2000	54.0732917785645
2001	56.5094299316406
2002	62.0325012207031
2003	68.0555267333984
2004	74.114372253418
2005	80.3940505981445
2006	105.680892944336
2007	119.619499206543
2008	124.459800720215
2009	133.415405273438
2010	138.751602172852
2011	140.912384033203
2012	136.69758605957
2013	131.456832885742
2014	127.394462585449
2015	121.739517211914
2016	117.44116973877
2017	111.87451171875
2018	108.306587219238
2019	105.593490600586
2020	105.623519897461
2021	104.90599822998
2022	106.198997497559