Bi-annual	US dollars
1987-06-30	55
1987-12-31	47
1988-06-30	41
1988-12-31	29
1989-06-30	19
1989-12-31	15
1990-06-30	14
1990-12-31	39
1991-06-30	36
1991-12-31	92
1992-06-30	93
1992-12-31	102
1993-06-30	110
1993-12-31	111
1994-06-30	90
1994-12-31	83
1995-06-30	62
1995-12-31	51
1996-06-30	14
1996-12-31	29
1997-06-30	23
1997-12-31	12
1998-06-30	7
1998-12-31	42
1999-06-30	77