Year	% gross
1971	0.373730003833771
1972	0.650910019874573
1973	0.736020028591156
1974	1.32824003696442
1975	1.94420003890991
1976	1.95510995388031
1977	2.34286999702454
1978	2.35246992111206
1979	2.26540994644165
1980	2.86957001686096
1983	4.6785101890564
1984	4.88794994354248
1987	5.62393999099731
1988	5.39188003540039
1989	5.16060018539429
1990	5.08363008499146
1999	6.6585898399353
2001	7.46347999572754
2003	7.67232990264893
2019	19.6200008392334