Bi-annual	US dollars
1987-06-30	379
1987-12-31	581
1988-06-30	428
1988-12-31	430
1989-06-30	202
1989-12-31	182
1990-06-30	108
1990-12-31	79
1991-06-30	52
1991-12-31	35
1992-06-30	29
1992-12-31	23
1993-06-30	20
1993-12-31	6
1994-06-30	3
1994-12-31	3
1995-06-30	3
1995-12-31	9
1996-06-30	6
1996-12-31	2
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0