Year	% gross
1971	92.7150115966797
1976	97.9538497924805
1981	100.957847595215
1986	97.8598175048828
1987	97.9282302856445
1988	98.0474700927734
1989	96.9025421142578
1990	96.6426696777344
1991	94.8525924682617
1992	93.2758636474609
1993	91.0410537719727
1994	89.2141036987305
1995	89.3551330566406
1996	89.8506927490234
1997	89.5388870239258
1998	90.2693023681641
1999	90.8119430541992
2003	94.2953186035156
2004	87.7930679321289
2005	86.3506164550781
2006	86.1190490722656
2007	86.1754837036133
2008	86.6701202392578
2009	89.550537109375
2011	94.2826309204102
2012	95.6097030639648
2013	96.7362365722656
2014	96.6664276123047
2015	98.9897766113281
2016	98.7827911376953
2017	100.676391601562
2018	102.048286437988
2019	102.587448120117
2020	94.5006713867188
2021	94.6697311401367
2022	95.6779479980469