Year	% gross
1970	80.2587203979492
1971	80.2193603515625
1972	81.2431869506836
1973	82.9123687744141
1974	85.0871505737305
1975	84.8234405517578
1976	85.6996536254883
1977	86.4367599487305
1978	86.5253219604492
1979	86.9738464355469
1980	87.1399688720703
1981	86.2986831665039
1982	87.1927490234375
1983	87.3037033081055
1984	87.9306793212891
1985	88.7386322021484
1986	90.6631011962891
1987	91.7320022583008
1988	92.4345474243164
1989	93.317008972168
1990	94.0007629394531
1991	95.6409072875977
1992	97.3622131347656
1993	100.692398071289
1994	104.784271240234
1995	105.468879699707
1996	105.80004119873
1997	105.759422302246
1998	102.902709960938
1999	103.364852905273
2000	103.127708435059
2001	104.019943237305
2002	104.746162414551
2003	104.930099487305
2004	103.898010253906
2005	105.651893615723
2006	106.249320983887
2007	106.274757385254
2008	106.879852294922
2009	107.448829650879
2010	109.132820129395
2011	110.032066345215
2012	108.946762084961
2013	109.277412414551
2014	108.635810852051
2015	108.525657653809
2016	107.533836364746
2017	107.953056335449
2018	108.138977050781
2019	108.18431854248
2020	107.94303894043
2021	107.949760437012
2022	107.922187805176