Bi-annual	US dollars
1987-06-30	40
1987-12-31	13
1988-06-30	24
1988-12-31	34
1989-06-30	11
1989-12-31	10
1990-06-30	2
1990-12-31	4
1991-06-30	15
1991-12-31	6
1992-06-30	6
1992-12-31	3
1993-06-30	8
1993-12-31	0
1994-06-30	8
1994-12-31	14
1995-06-30	10
1995-12-31	11
1996-06-30	20
1996-12-31	19
1997-06-30	2
1997-12-31	2
1998-06-30	23
1998-12-31	25
1999-06-30	27