Year	% gross
1971	104.504577636719
1972	102.205261230469
1973	102.218231201172
1974	102.822547912598
1976	104.616630554199
1977	108.43482208252
1978	111.411613464355
1980	115.518661499023
1981	113.447868347168
1982	112.732009887695
1983	111.344779968262
1984	113.597450256348
1985	111.517288208008
1986	106.386291503906
1987	107.79573059082
1988	108.365272521973
1989	108.950843811035
1990	112.07096862793
1991	115.087600708008
1992	115.381591796875
1993	117.351371765137
1994	120.138542175293
1995	121.130508422852
1996	122.972351074219
1997	120.188987731934
1999	118.368881225586
2000	118.149200439453
2001	117.525131225586
2002	113.359191894531
2003	117.999946594238
2004	119.636672973633
2005	119.476409912109
2006	119.14533996582
2007	117.114227294922
2008	114.764373779297
2009	114.128028869629
2010	112.668518066406
2011	112.076461791992
2012	115.074172973633
2013	113.438339233398
2014	112.721199035645
2015	113.607513427734
2016	115.647926330566
2017	114.81812286377
2018	113.662620544434
2019	112.805587768555
2020	110.308288574219
2021	105.283950805664
2022	99.9364624023438