Bi-annual	US dollars
1987-06-30	8
1987-12-31	0
1988-06-30	0
1988-12-31	2
1989-06-30	2
1989-12-31	2
1990-06-30	10
1990-12-31	12
1991-06-30	3
1991-12-31	26
1992-06-30	4
1992-12-31	24
1993-06-30	8
1993-12-31	7
1994-06-30	6
1994-12-31	9
1995-06-30	11
1995-12-31	12
1996-06-30	25
1996-12-31	14
1997-06-30	88
1997-12-31	30
1998-06-30	75
1998-12-31	45
1999-06-30	52