Bi-annual	US dollars
1987-06-30	13
1987-12-31	49
1988-06-30	34
1988-12-31	11
1989-06-30	9
1989-12-31	10
1990-06-30	9
1990-12-31	12
1991-06-30	8
1991-12-31	17
1992-06-30	13
1992-12-31	12
1993-06-30	14
1993-12-31	3
1994-06-30	5
1994-12-31	5
1995-06-30	5
1995-12-31	8
1996-06-30	2
1996-12-31	3
1997-06-30	3
1997-12-31	3
1998-06-30	8
1998-12-31	13
1999-06-30	5