Year	% gross
1971	96.8398895263672
1972	95.8905410766602
1973	95.8458099365234
1974	95.8675231933594
1976	95.1420822143555
1977	103.399673461914
1978	102.80330657959
1979	103.330673217773
1980	100.549659729004
1981	100.888343811035
1982	102.206031799316
1983	101.187446594238
1984	99.3510818481445
1985	97.3068771362305
1986	96.3175735473633
1987	97.1832809448242
1988	101.068840026855
1989	106.399383544922
1991	98.6308822631836
1992	96.2950134277344
1993	95.3414535522461
1994	95.7366714477539
1995	97.0683898925781
1996	96.9123992919922
1997	97.385856628418
1999	98.1784973144531
2000	97.9309387207031
2001	96.8085403442383
2003	96.5165328979492
2005	103.625602722168
2007	100.860488891602
2008	102.044578552246
2009	98.9239730834961
2010	100.929550170898
2011	104.000343322754
2012	103.141578674316
2013	94.6660003662109
2014	91.8280029296875
2015	91.1050033569336
2016	88.9899978637695
2018	90.1330032348633
2019	89.4970016479492
2020	99.12451171875
2021	99.7228698730469