Year	% gross
1970	80.1616821289062
1971	80.1396102905273
1972	80.9900436401367
1973	82.7371063232422
1974	84.6450729370117
1975	84.7876586914062
1976	85.5336380004883
1977	86.3270034790039
1978	86.5162734985352
1979	87.0071334838867
1980	87.2253112792969
1981	86.7972030639648
1982	87.5590667724609
1983	87.6954116821289
1984	88.2104263305664
1985	89.0017318725586
1986	90.7131271362305
1987	91.5720672607422
1988	92.2227172851562
1989	93.1617584228516
1990	93.7589416503906
1991	93.8898391723633
1992	94.3246917724609
1993	97.6942367553711
1994	101.036743164062
1995	101.670608520508
1996	102.318481445312
1997	102.546966552734
1998	100.374610900879
1999	100.778427124023
2000	100.870788574219
2001	102.048446655273
2002	103.01741027832
2003	103.501022338867
2004	101.161613464355
2005	102.817253112793
2006	103.720138549805
2007	103.693710327148
2008	104.858879089355
2009	105.832641601562
2010	107.318603515625
2011	108.154136657715
2012	107.19213104248
2013	109.163421630859
2014	108.406372070312
2015	108.371772766113
2016	107.099166870117
2017	107.49829864502
2018	107.555969238281
2019	107.341667175293
2020	107.639572143555
2021	106.759506225586
2022	106.720428466797