Bi-annual	US dollars
1987-06-30	19
1987-12-31	30
1988-06-30	55
1988-12-31	54
1989-06-30	3
1989-12-31	8
1990-06-30	14
1990-12-31	6
1991-06-30	6
1991-12-31	11
1992-06-30	10
1992-12-31	27
1993-06-30	30
1993-12-31	30
1994-06-30	11
1994-12-31	13
1995-06-30	8
1995-12-31	20
1996-06-30	25
1996-12-31	21
1997-06-30	18
1997-12-31	67
1998-06-30	20
1998-12-31	12
1999-06-30	8