Year	% gross
1970	97.8762893676758
1971	94.5376281738281
1972	92.1505966186523
1973	92.8533477783203
1974	91.9058303833008
1975	99.1057815551758
1976	104.241767883301
1977	104.272842407227
1978	102.566963195801
1979	103.234329223633
1980	103.274353027344
1981	104.336639404297
1982	105.028526306152
1983	106.772277832031
1984	109.33512878418
1985	113.059120178223
1986	116.527671813965
1987	117.93563079834
1988	117.207260131836
1989	115.441932678223
1990	113.096252441406
1991	111.051528930664
1992	109.877937316895
1993	108.775741577148
1994	108.409568786621
1995	108.991340637207
1996	108.896789550781
1997	109.142379760742
1998	109.840026855469
1999	111.656951904297
2000	112.434883117676
2001	113.614250183105
2002	112.851669311523
2003	111.741119384766
2004	110.689178466797
2005	109.067802429199
2006	107.484596252441
2007	108.579887390137
2008	108.744651794434
2009	108.617393493652
2010	106.570320129395
2011	106.126167297363
2012	105.867919921875
2013	105.845642089844
2014	103.080688476562
2015	102.008201599121
2016	101.681739807129
2017	101.429260253906
2018	101.299858093262
2019	101.288948059082
2020	101.280410766602
2021	101.205093383789
2022	101.620498657227