Bi-annual	US dollars
1987-06-30	55
1987-12-31	55
1988-06-30	60
1988-12-31	74
1989-06-30	65
1989-12-31	52
1990-06-30	82
1990-12-31	106
1991-06-30	120
1991-12-31	106
1992-06-30	173
1992-12-31	223
1993-06-30	182
1993-12-31	115
1994-06-30	108
1994-12-31	139
1995-06-30	91
1995-12-31	64
1996-06-30	103
1996-12-31	101
1997-06-30	98
1997-12-31	89
1998-06-30	107
1998-12-31	48
1999-06-30	65