Bi-annual	US dollars
1987-06-30	76
1987-12-31	72
1988-06-30	65
1988-12-31	63
1989-06-30	2
1989-12-31	3
1990-06-30	0
1990-12-31	0
1991-06-30	0
1991-12-31	0
1992-06-30	2
1992-12-31	0
1993-06-30	0
1993-12-31	34
1994-06-30	49
1994-12-31	99
1995-06-30	127
1995-12-31	174
1996-06-30	177
1996-12-31	197
1997-06-30	216
1997-12-31	224
1998-06-30	177
1998-12-31	131
1999-06-30	121