Bi-annual	US dollars
1987-06-30	0
1987-12-31	2
1988-06-30	5
1988-12-31	4
1989-06-30	12
1989-12-31	11
1990-06-30	2
1990-12-31	8
1991-06-30	3
1991-12-31	2
1992-06-30	0
1992-12-31	0
1993-06-30	101
1993-12-31	123
1994-06-30	48
1994-12-31	64
1995-06-30	80
1995-12-31	76
1996-06-30	71
1996-12-31	65
1997-06-30	12
1997-12-31	31
1998-06-30	33
1998-12-31	75
1999-06-30	77