Year	% gross
1971	106.533477783203
1972	106.32105255127
1973	104.526237487793
1974	101.736106872559
1975	105.236381530762
1976	104.100631713867
1977	111.027153015137
1978	111.910667419434
1979	108.475708007812
1980	104.954147338867
1981	105.076637268066
1982	104.151222229004
1984	105.646110534668
1986	110.491073608398
1987	118.357208251953
1988	118.104942321777
1990	113.479850769043
1991	111.581367492676
1992	104.105003356934
1993	113.027160644531
1994	115.254852294922
1995	115.630187988281
1999	115.672241210938
2000	114.446678161621
2001	112.304252624512
2002	108.785316467285
2003	106.244743347168
2004	103.022453308105
2005	102.429237365723
2006	99.9769515991211
2007	99.40673828125
2008	99.536018371582
2009	100.854057312012
2010	102.391357421875
2011	104.908142089844
2012	105.970550537109
2013	104.171211242676
2014	106.471580505371
2015	99.6737365722656
2016	99.4389877319336
2017	97.6360015869141
2019	87.6069564819336
2020	88.100959777832
2021	90.3958282470703
2022	90.1696014404297