Year	% gross
1971	93.4714431762695
1972	93.8833923339844
1973	95.3701171875
1974	98.4531326293945
1975	98.8858795166016
1976	100.742416381836
1977	101.699089050293
1978	103.557609558105
1979	108.91365814209
1980	110.26538848877
1981	114.495239257812
1982	116.558006286621
1983	117.651260375977
1984	118.713279724121
1985	118.332572937012
1986	118.900428771973
1987	120.331527709961
1988	120.43025970459
1989	118.794998168945
1990	117.792861938477
1991	116.10391998291
1992	125.059280395508
1993	121.186630249023
1994	105.359230041504
1995	105.571586608887
1996	106.393760681152
1997	109.687652587891
1998	108.336212158203
1999	108.391151428223
2000	109.024398803711
2001	109.865509033203
2002	110.630950927734
2003	110.139976501465
2004	109.58470916748
2005	109.337348937988
2006	109.231506347656
2007	110.584251403809
2008	108.572509765625
2009	113.246849060059
2010	113.890800476074
2011	114.550247192383
2012	112.37003326416
2013	111.049880981445
2014	112.100112915039
2015	106.553497314453
2016	103.511901855469
2017	101.726547241211
2018	101.090873718262
2019	99.0661926269531
2020	97.683967590332
2021	96.8438568115234
2022	97.5341033935547