Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	0
1988-12-31	0
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	0
1992-12-31	0
1993-06-30	0
1993-12-31	93
1994-06-30	51
1994-12-31	55
1995-06-30	73
1995-12-31	101
1996-06-30	224
1996-12-31	223
1997-06-30	236
1997-12-31	206
1998-06-30	190
1998-12-31	285
1999-06-30	203