Bi-annual	US dollars
1987-06-30	21
1987-12-31	13
1988-06-30	15
1988-12-31	16
1989-06-30	17
1989-12-31	19
1990-06-30	14
1990-12-31	10
1991-06-30	6
1991-12-31	9
1992-06-30	11
1992-12-31	9
1993-06-30	8
1993-12-31	1
1994-06-30	2
1994-12-31	2
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	0
1997-06-30	0
1997-12-31	2
1998-06-30	3
1998-12-31	2
1999-06-30	2