Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	0
1988-12-31	0
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	0
1992-12-31	0
1993-06-30	0
1993-12-31	12
1994-06-30	42
1994-12-31	8
1995-06-30	6
1995-12-31	11
1996-06-30	44
1996-12-31	158
1997-06-30	77
1997-12-31	194
1998-06-30	155
1998-12-31	55
1999-06-30	44