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	56
1994-06-30	69
1994-12-31	95
1995-06-30	29
1995-12-31	9
1996-06-30	6
1996-12-31	10
1997-06-30	20
1997-12-31	84
1998-06-30	128
1998-12-31	35
1999-06-30	44