Year	% gross
1973	30.1888008117676
1975	34.2666091918945
1976	44.8824806213379
1977	49.4031105041504
1978	48.848819732666
1979	49.2882804870605
1980	50.3866386413574
1981	53.6034393310547
1982	57.1509399414063
1983	60.391960144043
1984	63.4863204956055
1985	57.3007316589355
1986	60.0214691162109
1987	60.9717292785645
1988	61.6450500488281
1989	62.290699005127
1990	63.8733596801758
1991	64.6836471557617
1992	67.2151184082031
1993	64.487548828125
1994	64.5352783203125
1995	66.5820007324219
1996	71.224006652832
1997	71.6799392700195
1998	72.1944732666016
1999	75.7842178344727
2000	73.6859436035156
2001	73.624153137207
2002	75.3637924194336
2003	82.1509399414063
2004	90.8318099975586
2005	94.0667724609375
2006	94.4427032470703
2007	98.4445266723633
2008	97.0622024536133
2009	94.7435913085938
2010	95.2003707885742
2011	94.925910949707
2012	94.8373489379883
2013	95.0096893310547
2014	95.561882019043
2015	93.8627319335938
2016	94.0800323486328
2017	96.3293380737305
2018	97.3190994262695
2019	99.5827484130859
2020	100.388809204102