Year	% gross
1970	0
1978	2.22864007949829
1979	2.1298201084137
1981	7.88265991210938
1984	5.82371997833252
1985	5.86108016967773
1999	2.98725008964539
2002	4.32166004180908
2003	4.84848022460938
2020	12.2519998550415