Bi-annual	US dollars
1987-06-30	58
1987-12-31	66
1988-06-30	49
1988-12-31	76
1989-06-30	53
1989-12-31	34
1990-06-30	16
1990-12-31	14
1991-06-30	2
1991-12-31	4
1992-06-30	4
1992-12-31	2
1993-06-30	26
1993-12-31	1
1994-06-30	2
1994-12-31	3
1995-06-30	3
1995-12-31	6
1996-06-30	6
1996-12-31	3
1997-06-30	7
1997-12-31	5
1998-06-30	2
1998-12-31	0
1999-06-30	0