Bi-annual	US dollars
1987-06-30	69
1987-12-31	115
1988-06-30	77
1988-12-31	154
1989-06-30	132
1989-12-31	171
1990-06-30	96
1990-12-31	91
1991-06-30	39
1991-12-31	39
1992-06-30	42
1992-12-31	48
1993-06-30	30
1993-12-31	24
1994-06-30	32
1994-12-31	16
1995-06-30	0
1995-12-31	16
1996-06-30	20
1996-12-31	67
1997-06-30	8
1997-12-31	21
1998-06-30	87
1998-12-31	378
1999-06-30	169