Bi-annual	US dollars
1987-06-30	58
1987-12-31	53
1988-06-30	68
1988-12-31	72
1989-06-30	47
1989-12-31	42
1990-06-30	3
1990-12-31	8
1991-06-30	0
1991-12-31	2
1992-06-30	4
1992-12-31	0
1993-06-30	3
1993-12-31	6
1994-06-30	3
1994-12-31	11
1995-06-30	2
1995-12-31	14
1996-06-30	6
1996-12-31	14
1997-06-30	10
1997-12-31	44
1998-06-30	45
1998-12-31	40
1999-06-30	19