Year	% gross
1971	105.722442626953
1972	103.573226928711
1973	102.07901763916
1974	103.506629943848
1975	105.37223815918
1976	106.576683044434
1977	108.586936950684
1978	107.869522094727
1979	110.449829101562
1980	107.49845123291
1981	109.837799072266
1982	107.153511047363
1983	105.475776672363
1984	104.420791625977
1985	103.171203613281
1986	102.582099914551
1987	103.767723083496
1988	106.134323120117
1989	108.113166809082
1990	109.665702819824
1991	109.151443481445
1992	108.424430847168
1993	108.557167053223
1994	107.611808776855
1995	107.619300842285
1996	111.776611328125
1997	112.294479370117
1998	110.719551086426
1999	110.750541687012
2000	110.60082244873
2001	109.193840026855
2002	108.097808837891
2003	107.838088989258
2004	106.663467407227
2005	105.968521118164
2006	103.892189025879
2007	103.435592651367
2008	105.310882568359
2009	107.67162322998
2014	109.671516418457
2015	108.664398193359
2016	106.216003417969
2017	103.182998657227
2018	98.0920028686523
2019	95.9789962768555
2020	95.8000030517578
2021	90.6100006103516
2022	91.8720016479492