Year	% gross
1970	37.8479385375977
1971	37.3252105712891
1972	36.8683090209961
1973	37.417610168457
1974	38.5568504333496
1975	40.4394989013672
1976	41.6009483337402
1977	42.4350395202637
1978	44.6717185974121
1979	47.9536094665527
1981	52.4097709655762
1982	54.9503784179688
1984	60.4373817443848
1986	63.393871307373
1987	64.7273101806641
1988	66.1028671264648
1989	68.4164886474609
1990	66.8722305297852
1991	66.2646713256836
1992	67.0537261962891
1993	70.1323776245117
1994	71.0975112915039
1995	70.5129776000977
1996	68.393180847168
1997	68.2323303222656
1998	71.3158111572266
2000	64.69677734375
2001	58.4081001281738
2002	55.8443984985352
2003	52.8710289001465
2004	53.0260810852051
2005	53.3847808837891
2006	51.9546318054199
2008	56.7955513000488
2012	95.8354873657227
2016	100.410133361816
2018	106.891746520996