Bi-annual	US dollars
1987-06-30	16
1987-12-31	4
1988-06-30	10
1988-12-31	33
1989-06-30	23
1989-12-31	8
1990-06-30	10
1990-12-31	12
1991-06-30	6
1991-12-31	6
1992-06-30	21
1992-12-31	8
1993-06-30	60
1993-12-31	12
1994-06-30	12
1994-12-31	16
1995-06-30	5
1995-12-31	5
1996-06-30	23
1996-12-31	3
1997-06-30	47
1997-12-31	67
1998-06-30	18
1998-12-31	33
1999-06-30	30