Bi-annual	US dollars
1987-06-30	15
1987-12-31	6
1988-06-30	14
1988-12-31	103
1989-06-30	124
1989-12-31	8
1990-06-30	12
1990-12-31	6
1991-06-30	6
1991-12-31	26
1992-06-30	61
1992-12-31	33
1993-06-30	35
1993-12-31	12
1994-06-30	0
1994-12-31	6
1995-06-30	10
1995-12-31	5
1996-06-30	3
1996-12-31	0
1997-06-30	32
1997-12-31	63
1998-06-30	57
1998-12-31	48
1999-06-30	0