Bi-annual	US dollars
1987-06-30	52
1987-12-31	66
1988-06-30	56
1988-12-31	52
1989-06-30	0
1989-12-31	5
1990-06-30	14
1990-12-31	2
1991-06-30	0
1991-12-31	0
1992-06-30	8
1992-12-31	8
1993-06-30	6
1993-12-31	1
1994-06-30	32
1994-12-31	22
1995-06-30	49
1995-12-31	34
1996-06-30	82
1996-12-31	24
1997-06-30	77
1997-12-31	194
1998-06-30	188
1998-12-31	68
1999-06-30	110