Year	% gross
1970	80.4378967285156
1971	80.4979476928711
1972	81.2964630126953
1973	82.7006301879883
1974	83.9119262695312
1975	85.1824722290039
1976	85.8563385009766
1977	86.7455062866211
1978	87.20263671875
1979	87.5605087280273
1980	87.9418334960938
1981	88.81884765625
1982	89.2131500244141
1983	89.4758377075195
1984	89.679801940918
1985	90.3568572998047
1986	90.8210296630859
1987	90.729377746582
1988	91.0254287719727
1989	92.0789413452148
1990	92.6140975952148
1991	88.8311767578125
1992	85.876953125
1993	87.7322616577148
1994	88.48486328125
1995	88.6371994018555
1996	90.0380477905273
1997	90.9659271240234
1998	89.7549514770508
1999	90.3591613769531
2000	91.7149124145508
2001	93.7659378051758
2002	95.5963821411133
2003	97.2884063720703
2004	93.2560882568359
2005	94.5312118530273
2006	96.1529006958008
2007	95.8488311767578
2008	98.1452713012695
2009	99.8148727416992
2010	100.541107177734
2011	101.038299560547
2012	100.062171936035
2013	105.540710449219
2014	104.152130126953
2015	103.832916259766
2016	101.550537109375
2017	101.145408630371
2018	100.83122253418
2019	99.8847885131836
2020	102.593208312988
2021	98.7780990600586
2022	98.7945709228516