Year	% gross
1971	43.9851608276367
1972	48.3249015808105
1982	118.261039733887
1983	103.808601379395
1986	76.2728500366211
1987	76.0590362548828
1988	73.5520477294922
1989	75.1002731323242
1990	73.9231491088867
1991	67.4797286987305
1992	62.6318206787109
1998	67.4952087402344
2008	102.40625
2009	100.978973388672
2010	100.082817077637
2011	98.2748413085938
2015	111.885627746582
2016	102.216003417969
2017	118.292999267578
2018	85.9769973754883