Year	% gross
1971	73.9379501342773
1972	78.8606262207031
1973	84.7328720092773
1974	90.0068435668945
1975	93.6417694091797
1976	94.7846908569336
1977	93.1675415039062
1978	93.9760894775391
1979	93.6963119506836
1980	93.7149963378906
1981	92.79833984375
1982	91.9879379272461
1983	91.7817535400391
1984	92.5183868408203
1985	92.6272888183594
1986	92.1584396362305
1987	93.5020599365234
1988	94.8941879272461
1989	94.262077331543
1990	93.7601623535156
1991	94.5094909667969
1992	95.6813812255859
1993	95.739860534668
1994	96.4607391357422
1995	96.8989028930664
1996	98.6048889160156
1997	101.337890625
1998	104.051338195801
1999	106.726829528809
2000	109.776649475098
2001	108.815559387207
2002	110.431266784668
2003	111.208053588867
2004	111.678230285645
2005	112.202522277832
2006	111.930168151855
2007	112.47193145752
2008	111.073600769043
2009	112.948272705078
2010	113.377952575684
2011	112.388160705566
2012	111.705558776855
2013	112.249488830566
2014	111.686698913574
2015	110.842269897461
2016	110.688102722168
2017	109.837707519531
2018	108.703483581543
2019	107.775131225586
2020	110.33056640625
2021	106.995567321777
2022	108.343933105469
2023	108.761642456055