Bi-annual	US dollars
1987-06-30	69
1987-12-31	92
1988-06-30	70
1988-12-31	69
1989-06-30	59
1989-12-31	73
1990-06-30	56
1990-12-31	81
1991-06-30	55
1991-12-31	77
1992-06-30	65
1992-12-31	45
1993-06-30	54
1993-12-31	37
1994-06-30	34
1994-12-31	44
1995-06-30	40
1995-12-31	40
1996-06-30	47
1996-12-31	56
1997-06-30	55
1997-12-31	46
1998-06-30	55
1998-12-31	70
1999-06-30	68