Year	% gross
1973	89.3568267822266
1974	88.3005905151367
1975	97.5317230224609
1976	104.090942382812
1977	103.86727142334
1978	101.342872619629
1979	100.873100280762
1980	100.801856994629
1981	102.138771057129
1982	102.739532470703
1983	105.047256469727
1984	107.411582946777
1985	112.077392578125
1986	116.69100189209
1987	118.954368591309
1988	117.621658325195
1989	115.30428314209
1990	110.908058166504
1991	109.738212585449
1992	108.74080657959
1993	107.816856384277
1994	107.790840148926
1995	108.436279296875
1996	108.455841064453
1997	108.919212341309
1998	108.980903625488
1999	110.699752807617
2000	112.210021972656
2001	113.462196350098
2002	112.164169311523
2003	110.971351623535
2004	109.944580078125
2005	108.335968017578
2006	106.646423339844
2007	107.022033691406
2008	107.421737670898
2009	107.198066711426
2010	107.063697814941
2011	106.759773254395
2012	106.473480224609
2013	105.84253692627
2014	102.720077514648
2015	101.729011535645
2016	101.57642364502
2017	101.406242370605
2018	101.078033447266
2019	101.194892883301
2020	101.729919433594
2021	102.009498596191
2022	102.427223205566