Bi-annual	US dollars
1987-06-30	27
1987-12-31	38
1988-06-30	27
1988-12-31	63
1989-06-30	40
1989-12-31	19
1990-06-30	7
1990-12-31	4
1991-06-30	10
1991-12-31	49
1992-06-30	36
1992-12-31	29
1993-06-30	26
1993-12-31	67
1994-06-30	5
1994-12-31	11
1995-06-30	8
1995-12-31	8
1996-06-30	6
1996-12-31	2
1997-06-30	3
1997-12-31	0
1998-06-30	52
1998-12-31	70
1999-06-30	166