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	21
1994-06-30	19
1994-12-31	34
1995-06-30	45
1995-12-31	40
1996-06-30	45
1996-12-31	55
1997-06-30	37
1997-12-31	46
1998-06-30	43
1998-12-31	38
1999-06-30	22