Bi-annual	US dollars
1987-06-30	90
1987-12-31	92
1988-06-30	72
1988-12-31	96
1989-06-30	124
1989-12-31	18
1990-06-30	40
1990-12-31	10
1991-06-30	3
1991-12-31	37
1992-06-30	42
1992-12-31	62
1993-06-30	32
1993-12-31	34
1994-06-30	26
1994-12-31	19
1995-06-30	14
1995-12-31	16
1996-06-30	14
1996-12-31	41
1997-06-30	22
1997-12-31	16
1998-06-30	60
1998-12-31	43
1999-06-30	33