Year	% gross
1971	47.2520599365234
1973	44.8923797607422
1982	57.149730682373
1985	53.5458106994629
1992	49.2079086303711
1994	50.039421081543
1995	51.3966789245605
1996	52.9845695495605
1997	53.6759605407715
1998	59.0875816345215