Bi-annual	US dollars
1987-06-30	52
1987-12-31	47
1988-06-30	43
1988-12-31	47
1989-06-30	26
1989-12-31	15
1990-06-30	16
1990-12-31	15
1991-06-30	11
1991-12-31	11
1992-06-30	11
1992-12-31	6
1993-06-30	30
1993-12-31	15
1994-06-30	3
1994-12-31	5
1995-06-30	3
1995-12-31	5
1996-06-30	5
1996-12-31	3
1997-06-30	5
1997-12-31	15
1998-06-30	5
1998-12-31	0
1999-06-30	0