Bi-annual	US dollars
1987-06-30	21
1987-12-31	2
1988-06-30	2
1988-12-31	14
1989-06-30	14
1989-12-31	5
1990-06-30	0
1990-12-31	0
1991-06-30	19
1991-12-31	0
1992-06-30	0
1992-12-31	0
1993-06-30	20
1993-12-31	16
1994-06-30	19
1994-12-31	17
1995-06-30	21
1995-12-31	33
1996-06-30	48
1996-12-31	450
1997-06-30	121
1997-12-31	499
1998-06-30	575
1998-12-31	714
1999-06-30	639