Year	% gross
1970	86.4769515991211
1971	84.7845077514648
1972	83.9306869506836
1973	85.3683471679688
1974	84.9225387573242
1975	89.8994369506836
1976	93.2448806762695
1977	93.9257431030273
1978	91.8882598876953
1979	92.2144470214844
1980	92.6999435424805
1981	93.4474182128906
1982	93.8476028442383
1983	95.1361770629883
1984	96.8775177001953
1985	98.9822616577148
1986	101.569801330566
1987	102.060516357422
1988	102.113830566406
1989	101.55158996582
1990	100.454978942871
1991	99.5990295410156
1992	99.0851898193359
1993	99.4538116455078
1994	99.8714065551758
1995	99.9833602905273
1996	100.140602111816
1997	100.476531982422
1998	100.774047851562
1999	101.874702453613
2000	102.63646697998
2001	103.174957275391
2002	102.997932434082
2003	106.097290039062
2004	106.358520507812
2005	105.935516357422
2006	105.605987548828
2007	106.74292755127
2008	107.482879638672
2009	107.20777130127
2010	105.949928283691
2011	105.471092224121
2012	106.292449951172
2013	108.523727416992
2014	106.329307556152
2015	106.150047302246
2016	108.712837219238
2017	107.688499450684
2018	100.477912902832
2019	100.12377166748
2020	100.719657897949
2021	101.140090942383
2022	103.559692382812