Bi-annual	US dollars
1987-06-30	229
1987-12-31	251
1988-06-30	77
1988-12-31	90
1989-06-30	73
1989-12-31	35
1990-06-30	40
1990-12-31	48
1991-06-30	66
1991-12-31	45
1992-06-30	167
1992-12-31	48
1993-06-30	267
1993-12-31	259
1994-06-30	48
1994-12-31	52
1995-06-30	50
1995-12-31	34
1996-06-30	16
1996-12-31	27
1997-06-30	83
1997-12-31	71
1998-06-30	62
1998-12-31	5
1999-06-30	9