Year	% gross
1981	97.0161209106445
1982	96.8048400878906
1983	96.4826583862305
1984	96.1495819091797
1985	96.0363616943359
1986	96.0356903076172
1988	95.9937973022461
1990	95.5426406860352
1991	93.9458389282227
1992	93.3322906494141
1993	92.0170974731445
1994	91.313362121582
1999	96.8399276733398
2000	97.8325805664062
2001	99.4165725708008
2002	100.038528442383
2003	101.250122070312
2004	98.8390197753906
2005	95.1181106567383
2006	97.1627883911133
2007	97.6914291381836
2008	97.740348815918
2009	97.3778762817383
2010	98.1416778564453
2011	96.1171798706055
2012	99.4775466918945
2013	99.4303817749023
2014	98.2963180541992
2015	90.5028991699219
2016	88.5457534790039
2017	86.7886962890625
2018	85.8331909179688
2019	84.4568328857422
2020	84.4283294677734
2021	84.6516265869141