Year	% gross
1981	52.3806304931641
1982	55.0562515258789
1983	57.1706008911133
1984	58.178581237793
1985	59.1813087463379
1986	56.5735893249512
1987	58.3076591491699
1988	61.3627510070801
1989	61.5165100097656
1990	62.2491188049316
1991	85.0483474731445
1992	54.4967803955078
1993	53.5553207397461
1994	57.2466697692871
1995	59.2679595947266
1996	61.0158882141113
1997	63.2724990844727
1998	63.976879119873
1999	75.1463317871094
2000	76.8376998901367
2001	75.4903564453125
2002	73.3961868286133
2003	67.4140930175781
2004	77.2147674560547
2005	78.6296691894531
2006	82.2745513916016
2007	81.9640121459961
2008	84.8872833251953
2009	86.9684829711914
2010	89.2599411010742
2011	91.7885284423828
2012	94.6825790405273
2013	93.3207321166992
2014	92.0172500610352
2015	92.0111999511719
2016	92.091438293457
2017	91.7283096313477
2018	92.2828826904297
2019	93.0083618164063
2020	93.9730987548828