Bi-annual	US dollars
1987-06-30	171
1987-12-31	145
1988-06-30	73
1988-12-31	76
1989-06-30	68
1989-12-31	29
1990-06-30	45
1990-12-31	10
1991-06-30	57
1991-12-31	62
1992-06-30	51
1992-12-31	50
1993-06-30	41
1993-12-31	56
1994-06-30	56
1994-12-31	50
1995-06-30	0
1995-12-31	0
1996-06-30	0
1996-12-31	2
1997-06-30	0
1997-12-31	5
1998-06-30	70
1998-12-31	53
1999-06-30	3