Bi-annual	US dollars
1987-06-30	37
1987-12-31	30
1988-06-30	31
1988-12-31	34
1989-06-30	81
1989-12-31	60
1990-06-30	40
1990-12-31	12
1991-06-30	76
1991-12-31	43
1992-06-30	61
1992-12-31	44
1993-06-30	54
1993-12-31	34
1994-06-30	37
1994-12-31	9
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	14
1997-06-30	13
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0