Bi-annual	US dollars
1987-06-30	79
1987-12-31	89
1988-06-30	82
1988-12-31	85
1989-06-30	88
1989-12-31	81
1990-06-30	54
1990-12-31	54
1991-06-30	54
1991-12-31	56
1992-06-30	55
1992-12-31	55
1993-06-30	41
1993-12-31	58
1994-06-30	59
1994-12-31	89
1995-06-30	6
1995-12-31	9
1996-06-30	12
1996-12-31	10
1997-06-30	3
1997-12-31	3
1998-06-30	2
1998-12-31	2
1999-06-30	2