Bi-annual	US dollars
1987-06-30	6
1987-12-31	19
1988-06-30	17
1988-12-31	33
1989-06-30	90
1989-12-31	48
1990-06-30	44
1990-12-31	6
1991-06-30	3
1991-12-31	11
1992-06-30	10
1992-12-31	8
1993-06-30	2
1993-12-31	21
1994-06-30	11
1994-12-31	8
1995-06-30	5
1995-12-31	0
1996-06-30	0
1996-12-31	0
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0