Year	% gross
1970	79.2194595336914
1971	77.9562835693359
1972	77.874641418457
1973	79.6786727905273
1974	79.5967483520508
1975	84.162841796875
1976	87.2114105224609
1977	88.2359390258789
1978	87.0695571899414
1979	87.8846282958984
1980	88.6356582641602
1981	89.7512512207031
1982	90.5174713134766
1983	91.4974517822266
1984	92.9402770996094
1985	94.3125686645508
1986	95.9023132324219
1987	95.9099426269531
1988	96.0153274536133
1989	95.5681686401367
1990	94.5607299804688
1991	94.0779876708984
1992	93.9641876220703
1993	94.4944000244141
1994	94.9884796142578
1995	95.0038528442383
1996	94.9214019775391
1997	95.5843505859375
1998	95.9165802001953
1999	96.9474029541016
2000	97.9399490356445
2001	98.4244232177734
2002	98.5310821533203
2003	101.500427246094
2004	102.26286315918
2005	102.349212646484
2006	102.18953704834
2007	103.136367797852
2008	103.233657836914
2009	103.105361938477
2010	102.328887939453
2011	102.164939880371
2012	103.018348693848
2013	104.641693115234
2014	102.867469787598
2015	102.582496643066
2016	104.485992431641
2017	103.808082580566
2018	98.6925201416016
2019	98.7562026977539
2020	99.3298416137695
2021	99.5233993530273
2022	101.315788269043