Year	% gross
1970	75.333137512207
1971	75.2873687744141
1972	76.5175933837891
1973	78.8244476318359
1974	80.4438934326172
1975	81.9380035400391
1976	83.0983428955078
1977	84.2921524047852
1978	85.0052795410156
1979	85.6230621337891
1980	86.5141677856445
1981	87.0929870605469
1982	87.0810699462891
1983	88.2899932861328
1984	88.7658309936523
1985	89.8097229003906
1986	92.1208114624023
1987	93.2167892456055
1988	93.7421569824219
1989	94.5209732055664
1990	95.0898895263672
1991	96.8590393066406
1992	98.8561935424805
1993	102.179626464844
1994	105.341178894043
1995	106.16349029541
1996	106.832069396973
1997	106.289756774902
1998	103.264953613281
1999	103.764839172363
2000	103.576019287109
2001	104.736068725586
2002	105.287857055664
2003	105.53515625
2004	104.647941589355
2005	106.349380493164
2006	106.739059448242
2007	106.858642578125
2008	107.412620544434
2009	107.14038848877
2010	108.590408325195
2011	109.170639038086
2012	107.969757080078
2013	108.717742919922
2014	108.061088562012
2015	107.804328918457
2016	107.215476989746
2017	107.278923034668
2018	107.59245300293
2019	107.442192077637
2020	107.304481506348
2021	107.47924041748
2022	107.582847595215