Bi-annual	US dollars
1987-06-30	44
1987-12-31	8
1988-06-30	19
1988-12-31	27
1989-06-30	25
1989-12-31	79
1990-06-30	68
1990-12-31	133
1991-06-30	128
1991-12-31	60
1992-06-30	147
1992-12-31	158
1993-06-30	68
1993-12-31	111
1994-06-30	168
1994-12-31	117
1995-06-30	76
1995-12-31	119
1996-06-30	131
1996-12-31	101
1997-06-30	25
1997-12-31	71
1998-06-30	32
1998-12-31	60
1999-06-30	0