Year	% gross
1981	51.9880294799805
1982	55.0158615112305
1983	56.4954414367676
1984	57.2785415649414
1985	58.7046585083008
1986	55.6812286376953
1987	57.2839202880859
1988	60.0369606018066
1989	59.7031784057617
1990	60.4300918579102
1991	82.3638381958008
1992	59.7158813476563
1993	52.5544204711914
1994	56.4004211425781
1995	57.9501304626465
1996	59.5819892883301
1997	62.1188507080078
1998	63.5617485046387
1999	71.5698928833008
2000	70.904899597168
2001	74.6183776855469
2002	71.7326507568359
2003	66.320068359375
2004	75.3354568481445
2005	77.3722915649414
2006	81.3007507324219
2007	80.6171875
2008	83.684440612793
2009	86.2235107421875
2010	88.2548599243164
2011	90.4584197998047
2012	94.1645278930664
2013	92.5441818237305
2014	91.1913528442383
2015	91.2826309204102
2016	90.605339050293
2017	90.8618469238281
2018	91.4698333740234
2019	92.1772994995117
2020	93.1180725097656