Bi-annual	US dollars
1987-06-30	66
1987-12-31	64
1988-06-30	46
1988-12-31	38
1989-06-30	37
1989-12-31	34
1990-06-30	19
1990-12-31	15
1991-06-30	6
1991-12-31	11
1992-06-30	10
1992-12-31	2
1993-06-30	3
1993-12-31	1
1994-06-30	0
1994-12-31	0
1995-06-30	3
1995-12-31	3
1996-06-30	3
1996-12-31	2
1997-06-30	3
1997-12-31	3
1998-06-30	0
1998-12-31	3
1999-06-30	3