Bi-annual	US dollars
1987-06-30	110
1987-12-31	79
1988-06-30	60
1988-12-31	63
1989-06-30	121
1989-12-31	79
1990-06-30	40
1990-12-31	6
1991-06-30	19
1991-12-31	35
1992-06-30	25
1992-12-31	20
1993-06-30	15
1993-12-31	19
1994-06-30	3
1994-12-31	5
1995-06-30	2
1995-12-31	2
1996-06-30	2
1996-12-31	0
1997-06-30	0
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	3