Bi-annual	US dollars
1987-06-30	2
1987-12-31	6
1988-06-30	3
1988-12-31	4
1989-06-30	8
1989-12-31	6
1990-06-30	10
1990-12-31	8
1991-06-30	6
1991-12-31	7
1992-06-30	65
1992-12-31	53
1993-06-30	53
1993-12-31	53
1994-06-30	66
1994-12-31	11
1995-06-30	14
1995-12-31	2
1996-06-30	2
1996-12-31	0
1997-06-30	0
1997-12-31	2
1998-06-30	2
1998-12-31	2
1999-06-30	2