Year	% gross
1971	5.79869985580444
1972	6.44589996337891
1973	7.24727010726929
1978	8.02388954162598
1980	10.3316497802734
1981	13.3781499862671
1982	9.57524013519287
1983	8.81997966766357
1984	11.1124897003174
1985	9.6198902130127
1986	11.0132303237915
1987	10.6991300582886
1988	9.01539039611816
1989	9.95856952667236
1990	9.1802396774292
1991	9.68000030517578
1992	10.8827600479126
1998	11.3911800384521
1999	11.293270111084
2000	12.8563404083252
2001	14.4628095626831
2002	15.6130504608154
2008	22.3172206878662
2009	23.8500499725342
2010	27.6820907592773
2011	27.9312000274658
2016	53.5814514160156