Bi-annual	US dollars
1987-06-30	16
1987-12-31	26
1988-06-30	27
1988-12-31	36
1989-06-30	14
1989-12-31	26
1990-06-30	21
1990-12-31	19
1991-06-30	16
1991-12-31	9
1992-06-30	0
1992-12-31	0
1993-06-30	9
1993-12-31	0
1994-06-30	0
1994-12-31	9
1995-06-30	14
1995-12-31	2
1996-06-30	65
1996-12-31	67
1997-06-30	98
1997-12-31	54
1998-06-30	42
1998-12-31	55
1999-06-30	43