Year	% gross
1971	96.5018081665039
1972	96.6038818359375
1973	99.6712112426758
1974	100.115791320801
1975	101.011009216309
1976	102.581077575684
1978	105.31404876709
1979	102.791511535645
1980	101.854637145996
1981	101.954116821289
1982	100.074462890625
1983	99.8403625488281
1984	99.7348175048828
1985	99.5028076171875
1986	98.4895324707031
1987	99.0869979858398
1988	98.6595306396484
1989	99.8186187744141
1990	100.136222839355
1991	99.4553375244141
1992	90.6919174194336
1993	78.9445495605469
1994	78.3364028930664
1995	84.8358383178711
1996	91.6357803344727
1997	90.871452331543
1998	93.6298904418945
1999	95.6018905639648
2000	97.242431640625
2001	99.8385391235352
2002	101.283798217773
2003	106.160316467285
2004	110.112533569336
2005	97.9627914428711
2006	99.6550674438477
2007	96.9940414428711
2008	98.7987289428711
2009	107.182289123535
2010	118.511238098145
2011	117.345191955566
2012	114.09058380127
2013	107.471267700195
2014	100.203521728516
2015	98.0039978027344
2016	97.6399993896484
2017	96.3199996948242
2018	96.7009963989258
2019	96.0950012207031
2020	95.125
2021	94.9860000610352
2022	95.5630035400391