Bi-annual	US dollars
1987-06-30	26
1987-12-31	17
1988-06-30	12
1988-12-31	143
1989-06-30	116
1989-12-31	135
1990-06-30	211
1990-12-31	10
1991-06-30	63
1991-12-31	155
1992-06-30	49
1992-12-31	-8
1993-06-30	-74
1993-12-31	67
1994-06-30	133
1994-12-31	263
1995-06-30	243
1995-12-31	98
1996-06-30	176
1996-12-31	216
1997-06-30	98
1997-12-31	48
1998-06-30	300
1998-12-31	48
1999-06-30	16