Bi-annual	US dollars
1987-06-30	27
1987-12-31	40
1988-06-30	38
1988-12-31	80
1989-06-30	70
1989-12-31	68
1990-06-30	47
1990-12-31	41
1991-06-30	42
1991-12-31	39
1992-06-30	38
1992-12-31	29
1993-06-30	30
1993-12-31	200
1994-06-30	46
1994-12-31	36
1995-06-30	29
1995-12-31	23
1996-06-30	9
1996-12-31	12
1997-06-30	10
1997-12-31	16
1998-06-30	195
1998-12-31	100
1999-06-30	93