Bi-annual	US dollars
1987-06-30	5
1987-12-31	19
1988-06-30	14
1988-12-31	9
1989-06-30	0
1989-12-31	6
1990-06-30	3
1990-12-31	17
1991-06-30	18
1991-12-31	4
1992-06-30	11
1992-12-31	20
1993-06-30	35
1993-12-31	22
1994-06-30	28
1994-12-31	22
1995-06-30	29
1995-12-31	16
1996-06-30	19
1996-12-31	26
1997-06-30	90
1997-12-31	15
1998-06-30	3
1998-12-31	10
1999-06-30	11