Bi-annual	US dollars
1987-06-30	8
1987-12-31	4
1988-06-30	2
1988-12-31	4
1989-06-30	0
1989-12-31	2
1990-06-30	2
1990-12-31	2
1991-06-30	2
1991-12-31	2
1992-06-30	27
1992-12-31	26
1993-06-30	29
1993-12-31	33
1994-06-30	42
1994-12-31	52
1995-06-30	59
1995-12-31	62
1996-06-30	65
1996-12-31	0
1997-06-30	0
1997-12-31	21
1998-06-30	22
1998-12-31	22
1999-06-30	19