Year	% gross
1978	57.8903617858887
1979	58.3473510742188
1980	63.1801300048828
1981	68.7830505371094
1982	69.54248046875
1983	75.2088165283203
1984	79.505012512207
1985	80.1775436401367
1986	83.5896072387695
1987	73.163818359375
1992	77.8601989746094
1993	81.574577331543
1994	87.1677932739258
1995	93.361701965332
1996	99.9963302612305
1997	107.480949401855
1998	111.490928649902