Year	% gross
1970	71.4611968994141
1971	71.4917831420898
1972	72.4927673339844
1973	73.7115707397461
1974	74.9065475463867
1975	75.435302734375
1976	76.1189117431641
1977	77.1365814208984
1978	77.6054916381836
1979	77.347526550293
1980	80.4480972290039
1981	80.7968521118164
1982	82.2061996459961
1983	82.6467132568359
1984	83.4497833251953
1985	83.4380493164062
1986	84.9254913330078
1987	85.5303497314453
1988	85.6731491088867
1989	85.8971176147461
1990	85.863037109375
1991	86.6039428710938
1992	87.7267303466797
1993	89.9043502807617
1994	91.8850021362305
1995	92.3450088500977
1996	92.9800186157227
1997	93.2704696655273
1998	93.231201171875
1999	94.0968780517578
2000	94.8044204711914
2001	96.1223602294922
2002	97.0240478515625
2003	97.7250518798828
2004	97.0644073486328
2005	97.6902694702148
2006	98.0679702758789
2007	98.4875335693359
2008	98.8460693359375
2009	98.3827133178711
2010	99.5136184692383
2011	99.7804183959961
2012	99.4892883300781
2013	103.78491973877
2014	104.771957397461
2015	105.421730041504
2016	105.75904083252
2017	106.690269470215
2018	106.45955657959
2019	106.649482727051
2020	106.185218811035
2021	105.881912231445
2022	105.877067565918