Year	% gross
1970	114.343650817871
1971	115.632827758789
1972	112.822052001953
1973	113.221862792969
1974	106.284332275391
1975	104.071876525879
1976	104.892509460449
1977	106.149139404297
1978	106.72534942627
1979	106.379821777344
1980	107.046546936035
1981	123.050468444824
1982	112.990631103516
1983	106.35530090332
1984	104.985450744629
1985	105.934371948242
1986	105.714958190918
1987	106.879089355469
1988	108.096549987793
1989	109.677093505859
1990	110.105110168457
1991	109.681442260742
1992	109.391227722168
1993	109.262306213379
1994	109.214530944824
1995	109.434478759766
1996	109.655586242676
1997	114.884590148926
1998	114.399131774902
1999	114.088729858398
2000	110.200187683105
2001	109.692268371582
2002	111.093246459961
2003	111.055969238281
2004	111.088363647461
2005	110.983726501465
2006	111.688217163086
2007	111.181259155273
2008	110.917297363281
2009	110.820098876953
2010	109.976486206055
2011	110.70337677002
2012	109.7822265625
2013	109.706832885742
2014	109.459808349609
2015	109.24047088623
2016	108.082290649414
2017	107.146530151367
2018	105.275650024414
2019	104.354148864746
2020	105.236610412598
2021	107.99080657959
2022	105.501998901367