Bi-annual	US dollars
1987-06-30	35
1987-12-31	111
1988-06-30	43
1988-12-31	42
1989-06-30	39
1989-12-31	26
1990-06-30	7
1990-12-31	139
1991-06-30	47
1991-12-31	77
1992-06-30	13
1992-12-31	92
1993-06-30	3
1993-12-31	59
1994-06-30	68
1994-12-31	156
1995-06-30	27
1995-12-31	43
1996-06-30	6
1996-12-31	98
1997-06-30	2
1997-12-31	97
1998-06-30	10
1998-12-31	12
1999-06-30	54