Bi-annual	US dollars
1987-06-30	23
1987-12-31	25
1988-06-30	12
1988-12-31	7
1989-06-30	16
1989-12-31	15
1990-06-30	21
1990-12-31	21
1991-06-30	19
1991-12-31	11
1992-06-30	25
1992-12-31	11
1993-06-30	11
1993-12-31	7
1994-06-30	5
1994-12-31	5
1995-06-30	0
1995-12-31	2
1996-06-30	34
1996-12-31	0
1997-06-30	8
1997-12-31	3
1998-06-30	7
1998-12-31	7
1999-06-30	0