Year	% gross
1971	37.4884185791016
1972	37.4794883728027
1973	38.2606315612793
1974	39.0727882385254
1975	39.3539581298828
1976	38.5845184326172
1977	41.4119682312012
1978	40.1118202209473
1979	41.3826484680176
1980	42.2887382507324
1981	43.5434494018555
1982	45.1722297668457
1983	47.5859985351562
1984	49.2207489013672
1985	50.4233093261719
1986	52.0773811340332
1987	52.5961608886719
1988	53.4526901245117
1989	53.0852012634277
1990	53.4985504150391
1991	53.9792098999023
1992	53.8196601867676
1993	53.3697700500488
1994	54.5564002990723
1995	55.5428199768066
1996	59.2184181213379
1997	63.3916816711426
1998	66.9053268432617
1999	66.2854537963867
2000	69.85498046875
2001	71.9839782714844
2002	73.1250762939453
2003	77.3755569458008
2004	80.2091598510742
2005	82.1227874755859
2006	81.8475189208984
2007	85.0945129394531
2008	85.2544708251953
2009	84.6334991455078
2010	84.3055114746094
2011	86.8277130126953
2012	86.3720932006836
2013	83.9905319213867
2014	85.126091003418
2015	84.8736877441406
2016	83.9000015258789
2017	84.4609985351562
2018	84.3079986572266
2019	83.3581314086914
2020	84.5763092041016
2021	82.925407409668
2022	83.2787017822266