Bi-annual	US dollars
1987-06-30	24
1987-12-31	11
1988-06-30	27
1988-12-31	13
1989-06-30	25
1989-12-31	6
1990-06-30	31
1990-12-31	4
1991-06-30	16
1991-12-31	26
1992-06-30	29
1992-12-31	50
1993-06-30	44
1993-12-31	19
1994-06-30	25
1994-12-31	14
1995-06-30	76
1995-12-31	45
1996-06-30	20
1996-12-31	94
1997-06-30	12
1997-12-31	117
1998-06-30	72
1998-12-31	68
1999-06-30	112