Bi-annual	US dollars
1987-06-30	53
1987-12-31	4
1988-06-30	3
1988-12-31	4
1989-06-30	3
1989-12-31	3
1990-06-30	14
1990-12-31	15
1991-06-30	5
1991-12-31	13
1992-06-30	19
1992-12-31	15
1993-06-30	11
1993-12-31	15
1994-06-30	39
1994-12-31	5
1995-06-30	5
1995-12-31	3
1996-06-30	9
1996-12-31	12
1997-06-30	158
1997-12-31	35
1998-06-30	20
1998-12-31	37
1999-06-30	9