Bi-annual	US dollars
1987-06-30	3
1987-12-31	4
1988-06-30	2
1988-12-31	4
1989-06-30	2
1989-12-31	2
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	2
1992-06-30	8
1992-12-31	8
1993-06-30	5
1993-12-31	10
1994-06-30	19
1994-12-31	63
1995-06-30	78
1995-12-31	110
1996-06-30	123
1996-12-31	99
1997-06-30	130
1997-12-31	135
1998-06-30	218
1998-12-31	215
1999-06-30	200