Year	% gross
1971	96.363037109375
1972	96.9801712036133
1973	96.7262496948242
1974	96.4223403930664
1975	96.5213088989258
1976	97.0778427124023
1977	97.6705169677734
1978	98.2270889282227
1979	99.1084976196289
1980	99.3059463500977
1981	99.3555908203125
1982	99.0684967041016
1983	98.8938903808594
1984	98.8346862792969
1985	98.7345504760742
1986	98.7028732299805
1987	98.7136917114258
1988	98.8529281616211
1989	98.857063293457
1990	99.2719421386719
1991	99.5151214599609
1992	99.8828811645508
1993	104.090789794922
1994	104.684661865234
1995	105.315963745117
1996	105.407409667969
1997	105.195579528809
1998	108.960227966309
1999	107.749031066895
2000	106.774490356445
2001	106.826759338379
2002	107.147102355957
2003	107.762382507324
2004	100.143241882324
2005	100.282669067383
2006	100.304191589355
2007	100.05542755127
2008	100.137687683105
2009	99.485237121582
2010	99.1634674072266
2011	97.7859420776367
2012	99.5537185668945
2013	118.135437011719
2014	118.02986907959
2015	119.62419128418
2016	121.448799133301
2017	122.896057128906
2018	123.754661560059
2019	120.596801757812
2020	119.500106811523
2021	117.347633361816
2022	116.425392150879