Bi-annual	US dollars
1987-06-30	3
1987-12-31	6
1988-06-30	10
1988-12-31	24
1989-06-30	0
1989-12-31	11
1990-06-30	37
1990-12-31	41
1991-06-30	26
1991-12-31	45
1992-06-30	59
1992-12-31	29
1993-06-30	53
1993-12-31	1
1994-06-30	5
1994-12-31	9
1995-06-30	60
1995-12-31	20
1996-06-30	81
1996-12-31	53
1997-06-30	47
1997-12-31	87
1998-06-30	295
1998-12-31	155
1999-06-30	117