Year	% gross
1970	72.0419998168945
1971	75.8181762695312
1973	81.2184829711914
1974	84.018310546875
1975	88.7761611938477
1976	91.3426513671875
1977	89.4984970092773
1978	91.20556640625
1979	92.6994400024414
1980	93.3479309082031
1981	93.1422882080078
1983	96.5975036621094
1984	103.122550964355
1986	100.329460144043
1987	106.06714630127
1989	95.716926574707
1990	97.7547378540039
1991	99.2654113769531
1992	99.5341110229492
1993	101.208633422852
1994	103.512939453125
1995	105.900367736816
1996	107.14688873291
1997	108.377258300781
1998	109.639839172363
1999	111.763450622559
2000	118.203018188477
2001	117.258659362793
2002	117.844116210938
2003	116.392272949219
2004	115.863822937012
2005	115.213752746582
2006	113.596397399902
2007	112.750061035156
2008	111.396812438965
2009	107.495628356934
2010	105.222427368164
2011	101.33625793457
2012	98.5522918701172
2013	96.649543762207
2014	95.09326171875
2015	94.832763671875
2016	95.3954315185547
2017	96.4079513549805
2018	97.2089996337891
2019	97.9377517700195
2020	98.5986480712891
2021	98.8545608520508
2022	99.6189498901367