Year	% gross
1981	99.8030471801758
1982	100.929122924805
1983	101.363647460938
1984	101.125846862793
1985	102.689636230469
1986	103.144271850586
1987	111.051849365234
1988	112.527603149414
1989	111.159858703613
1990	91.5522308349609
1991	90.3039398193359
1992	89.0333404541016
1993	88.7859268188477
1994	89.743896484375
1995	90.1715393066406
1996	93.4111175537109
1997	95.3746109008789
1998	97.5217437744141
1999	99.513069152832
2000	103.732887268066
2001	104.365669250488
2002	104.147758483887
2003	103.908699035645
2004	103.184371948242
2005	102.086647033691
2006	101.497611999512
2007	100.716049194336
2008	100.275840759277
2009	99.9605407714844
2010	99.3147201538086
2011	98.9099502563477
2012	98.1646118164062
2013	97.717903137207
2014	97.5257568359375
2015	96.7903213500977
2016	97.2410125732422
2017	97.0744171142578
2018	97.5352783203125
2019	98.2528381347656
2020	98.0285034179688
2021	98.6675796508789
2022	99.0606918334961