Year	% gross
1970	104.656959533691
1971	106.676231384277
1972	106.859703063965
1973	108.122001647949
1974	108.552391052246
1975	108.216499328613
1976	108.26554107666
1977	110.938453674316
1978	112.782409667969
1979	116.488891601562
1980	117.004821777344
1981	117.083442687988
1982	117.918640136719
1983	116.64958190918
1984	118.2021484375
1985	117.265403747559
1986	116.090553283691
1987	115.318901062012
1988	116.362350463867
1989	114.304039001465
1990	116.814697265625
1991	113.962478637695
1992	114.649421691895
1993	115.011627197266
1994	115.552436828613
1995	116.145431518555
1996	117.018493652344
1997	115.652160644531
1998	118.847869873047
1999	119.78768157959
2000	118.916343688965
2001	118.303840637207
2002	118.351692199707
2003	117.282043457031
2004	117.434036254883
2005	116.707931518555
2006	114.4296875
2007	116.30948638916
2008	115.946891784668
2009	116.227096557617
2010	109.133117675781
2011	108.30980682373
2012	108.26293182373
2013	109.00025177002
2014	107.918251037598
2015	106.802337646484
2016	106.060508728027
2017	105.444976806641
2018	105.16544342041
2019	104.858222961426
2020	104.109916687012
2021	103.268081665039
2022	103.73592376709