Year	% gross
1970	0.2778599858284
1975	0.4860799908638
1977	0.823499977588654
1980	0.992680013179779
1981	1.09195995330811
1982	1.06664001941681
1984	2.99535989761353
1985	4.02683019638062
1986	5.19375991821289
1988	5.14357995986938
2003	2.70386004447937
2011	1.14999997615814