Year	% gross
1970	46.8988990783691
1971	47.0973701477051
1972	47.8047294616699
1973	49.9059715270996
1974	52.4841194152832
1975	55.3273391723633
1976	57.5369987487793
1977	57.9502105712891
1978	57.9284706115723
1979	57.8806495666504
1980	58.8355712890625
1981	59.1000518798828
1982	59.8702087402344
1983	61.6133918762207
1984	63.6088600158691
1985	64.4017181396484
1986	66.0784683227539
1987	66.7200088500977
1988	66.9215469360352
1989	66.8009490966797
1990	68.1469802856445
1991	69.8825836181641
1992	70.4990310668945
1993	71.0947494506836
1994	72.0191268920898
1995	72.1786575317383
1996	73.4041976928711
1997	73.0403900146484
1998	75.9109573364258
1999	76.0357131958008
2000	75.3579177856445
2001	76.8027572631836
2002	78.459587097168
2003	79.617919921875
2004	79.0974578857422
2005	82.3268127441406
2006	79.5150985717773
2007	79.3382186889648
2008	79.4683303833008
2009	79.4223022460938
2010	80.9804763793945
2011	82.5830688476563
2012	83.7623519897461
2013	84.0220565795898
2014	81.8766708374023
2015	84.6000289916992
2016	85.7869186401367
2017	85.6544799804688
2018	85.4592208862305
2019	85.8242721557617
2020	86.0106582641602