Bi-annual	US dollars
1987-06-30	118
1987-12-31	117
1988-06-30	121
1988-12-31	116
1989-06-30	101
1989-12-31	90
1990-06-30	3
1990-12-31	10
1991-06-30	6
1991-12-31	4
1992-06-30	2
1992-12-31	12
1993-06-30	12
1993-12-31	16
1994-06-30	14
1994-12-31	22
1995-06-30	19
1995-12-31	25
1996-06-30	20
1996-12-31	24
1997-06-30	23
1997-12-31	61
1998-06-30	58
1998-12-31	47
1999-06-30	35