Bi-annual	US dollars
1987-06-30	8
1987-12-31	30
1988-06-30	19
1988-12-31	65
1989-06-30	57
1989-12-31	82
1990-06-30	96
1990-12-31	120
1991-06-30	57
1991-12-31	77
1992-06-30	44
1992-12-31	33
1993-06-30	86
1993-12-31	35
1994-06-30	32
1994-12-31	33
1995-06-30	41
1995-12-31	31
1996-06-30	34
1996-12-31	317
1997-06-30	12
1997-12-31	0
1998-06-30	7
1998-12-31	0
1999-06-30	8