Year	% gross
1971	0.112159997224808
1972	0.180840000510216
1973	0.261799991130829
1976	0.791740000247955
1977	0.83653998374939
1978	0.883960008621216
1979	1.02166998386383
1980	1.27225005626678
1983	2.38287997245789
1984	2.63054990768433
1987	3.19833993911743
1988	3.18647003173828
1989	3.14720010757446
1990	3.04156994819641
1999	4.75901985168457
2001	6.00076007843018
2003	5.60788011550903
2019	21.8330001831055