Year	% gross
1971	41.7369003295898
1972	43.149040222168
1973	42.240161895752
1977	55.5857315063477
1981	71.9613418579102
1982	78.428092956543
1983	80.8240432739258
1984	82.9468231201172
1985	82.1985321044922
1986	82.8612213134766
1987	83.0370712280273
1988	83.4527130126953
1989	81.5805282592773
1990	81.5554809570312
1991	78.0025100708008
1992	75.8764572143555
1993	75.0583801269531
2004	84.2731094360352