Year	% gross
1970	20.4683990478516
1971	19.7560997009277
1972	20.0160999298096
1973	20.3882598876953
1974	19.8805694580078
1975	22.2640209197998
1976	18.9562606811523
1977	18.5301494598389
1978	26.5393199920654
1979	27.4803905487061
1980	26.2307090759277
1981	25.1775798797607
1982	24.4646892547607
1990	53.8398704528809
1993	83.5462112426758
1995	76.0992736816406
1996	80.2998123168945
1997	96.5719528198242
1998	93.1870574951172
1999	94.929557800293
2000	91.9024276733398
2001	93.6992797851563
2002	95.1196594238281
2003	105.725151062012
2004	100.147247314453
2005	101.414810180664
2006	100.464126586914
2007	97.7011489868164
2008	96.6249313354492
2009	100.545562744141
2010	104.215179443359
2011	106.601593017578
2012	106.67440032959
2013	105.557823181152
2014	104.570190429688
2015	106.742057800293
2016	105.398422241211
2017	100.519340515137
2018	98.7385330200195
2019	97.5970611572266
2020	99.6104278564453
2021	99.6104278564453