Bi-annual	US dollars
1987-06-30	2
1987-12-31	0
1988-06-30	0
1988-12-31	0
1989-06-30	0
1989-12-31	2
1990-06-30	3
1990-12-31	6
1991-06-30	5
1991-12-31	7
1992-06-30	11
1992-12-31	9
1993-06-30	27
1993-12-31	37
1994-06-30	48
1994-12-31	59
1995-06-30	67
1995-12-31	68
1996-06-30	137
1996-12-31	130
1997-06-30	70
1997-12-31	44
1998-06-30	63
1998-12-31	95
1999-06-30	73