Bi-annual	US dollars
1987-06-30	140
1987-12-31	247
1988-06-30	101
1988-12-31	155
1989-06-30	96
1989-12-31	147
1990-06-30	72
1990-12-31	33
1991-06-30	36
1991-12-31	0
1992-06-30	10
1992-12-31	11
1993-06-30	21
1993-12-31	0
1994-06-30	8
1994-12-31	0
1995-06-30	0
1995-12-31	5
1996-06-30	12
1996-12-31	12
1997-06-30	12
1997-12-31	46
1998-06-30	67
1998-12-31	0
1999-06-30	0