Year	current US$
1992	28000000
1993	19000000
1994	10000000
1995	5000000
1996	9000000
1997	5000000
1998	7360000.1335144
1999	37209999.0844727
2000	119160003.662109
2001	39790000.9155273
2002	47529998.779296905
2003	44619998.9318848
2004	38880001.0681152