Year	% gross
1971	113.347473144531
1972	113.582580566406
1973	114.716178894043
1974	116.137847900391
1975	115.780830383301
1976	119.409118652344
1977	120.931213378906
1978	121.26831817627
1979	120.739288330078
1980	121.100692749023
1981	120.704917907715
1982	118.631561279297
1983	118.431823730469
1984	117.487731933594
1985	126.784660339355
1986	124.848602294922
1987	128.012802124023
1988	127.982406616211
1990	124.733253479004
1991	122.139060974121
1992	125.928688049316
1993	124.749771118164
1994	126.348793029785
1995	126.292922973633
1996	125.14924621582
1998	123.397651672363
1999	120.821678161621
2000	119.70580291748
2001	119.482360839844
2002	115.040893554688
2003	115.237442016602
2004	114.672149658203
2005	114.44255065918
2006	113.981163024902
2007	113.063117980957
2008	112.717491149902
2009	110.981079101562
2010	109.77262878418
2011	109.651611328125
2012	108.921829223633
2013	110.040496826172
2014	108.552978515625
2015	107.011596679688
2016	105.805290222168
2017	104.913833618164
2018	104.979461669922
2019	105.182922363281
2020	105.589859008789
2021	104.925727844238