Year	% gross
1970	105.208389282227
1971	107.052726745605
1972	107.264221191406
1973	108.692756652832
1974	109.288818359375
1975	109.010200500488
1976	108.986427307129
1977	111.661689758301
1978	113.43977355957
1979	117.309097290039
1980	117.809913635254
1981	117.715377807617
1982	118.73690032959
1983	117.596076965332
1984	119.516647338867
1985	118.45841217041
1986	117.240753173828
1987	116.477500915527
1988	117.680023193359
1989	115.379203796387
1990	118.024307250977
1991	114.696586608887
1992	115.437950134277
1993	115.896446228027
1994	116.641273498535
1995	117.433799743652
1996	118.626312255859
1997	118.085899353027
1998	120.476226806641
1999	121.527221679688
2000	120.622680664062
2001	119.795471191406
2002	119.704467773438
2003	118.632133483887
2004	118.645233154297
2005	117.888236999512
2006	115.383712768555
2007	117.294891357422
2008	117.06078338623
2009	117.419746398926
2010	109.722480773926
2011	108.833992004395
2012	108.805686950684
2013	109.62760925293
2014	108.585746765137
2015	107.452133178711
2016	106.861328125
2017	106.361099243164
2018	105.880821228027
2019	105.399871826172
2020	104.430992126465
2021	103.282592773438
2022	103.623908996582