Year	% gross
1971	0.162159994244576
1972	0.159940004348755
1973	0.172920003533363
1974	0.188170000910759
1975	0.237210005521774
1976	0.210030004382133
1984	0.302969992160797
1985	0.30647000670433
2000	1.4646600484848
2001	1.17101001739502
2002	1.11351001262665