Bi-annual	US dollars
1987-06-30	350
1987-12-31	183
1988-06-30	160
1988-12-31	168
1989-06-30	225
1989-12-31	161
1990-06-30	96
1990-12-31	83
1991-06-30	55
1991-12-31	62
1992-06-30	69
1992-12-31	85
1993-06-30	93
1993-12-31	81
1994-06-30	69
1994-12-31	75
1995-06-30	68
1995-12-31	67
1996-06-30	61
1996-12-31	43
1997-06-30	100
1997-12-31	16
1998-06-30	5
1998-12-31	2
1999-06-30	2