Bi-annual	US dollars
1987-06-30	110
1987-12-31	79
1988-06-30	142
1988-12-31	154
1989-06-30	99
1989-12-31	5
1990-06-30	7
1990-12-31	0
1991-06-30	5
1991-12-31	6
1992-06-30	0
1992-12-31	0
1993-06-30	0
1993-12-31	9
1994-06-30	2
1994-12-31	0
1995-06-30	0
1995-12-31	0
1996-06-30	14
1996-12-31	10
1997-06-30	43
1997-12-31	15
1998-06-30	18
1998-12-31	32
1999-06-30	20