Bi-annual	US dollars
1987-06-30	13
1987-12-31	23
1988-06-30	31
1988-12-31	20
1989-06-30	26
1989-12-31	19
1990-06-30	23
1990-12-31	4
1991-06-30	8
1991-12-31	37
1992-06-30	10
1992-12-31	45
1993-06-30	21
1993-12-31	13
1994-06-30	22
1994-12-31	31
1995-06-30	49
1995-12-31	31
1996-06-30	23
1996-12-31	45
1997-06-30	12
1997-12-31	12
1998-06-30	13
1998-12-31	92
1999-06-30	11