Year	% gross
1970	78.1663131713867
1971	77.784782409668
1972	78.4986724853516
1973	77.7631225585938
1974	75.7208786010742
1975	80.1393890380859
1976	83.9941482543945
1977	86.5453262329102
1978	94.3998565673828
1981	103.975662231445
1982	110.022857666016
1983	115.163467407227
1984	118.43586730957
1985	120.317573547363
1986	118.044998168945
1987	116.999031066895
1988	115.75276184082
1989	115.695907592773
1990	113.685302734375
1991	112.832397460938
1992	112.029441833496
1993	111.253349304199
1994	112.639289855957
1995	112.45263671875
1996	112.133888244629
1997	112.077079772949
1998	111.829986572266
1999	113.645492553711
2000	110.546859741211
2001	111.41316986084
2002	112.110771179199
2003	112.260879516602
2004	111.824287414551
2005	110.090660095215
2006	108.652816772461
2007	110.832832336426
2008	110.314682006836
2009	111.263687133789
2010	116.00227355957
2011	117.515846252441
2012	115.588447570801
2013	112.431121826172
2014	109.357360839844
2015	107.468147277832
2016	105.206901550293
2017	103.704223632812
2018	102.872863769531
2019	100.88200378418
2020	100.612998962402
2021	100.170997619629
2022	98.8099975585938