Bi-annual	US dollars
1987-06-30	32
1987-12-31	79
1988-06-30	78
1988-12-31	43
1989-06-30	9
1989-12-31	40
1990-06-30	35
1990-12-31	48
1991-06-30	702
1991-12-31	854
1992-06-30	771
1992-12-31	670
1993-06-30	44
1993-12-31	61
1994-06-30	76
1994-12-31	238
1995-06-30	261
1995-12-31	540
1996-06-30	278
1996-12-31	255
1997-06-30	90
1997-12-31	199
1998-06-30	43
1998-12-31	125
1999-06-30	22