Bi-annual	US dollars
1987-06-30	66
1987-12-31	92
1988-06-30	97
1988-12-31	67
1989-06-30	237
1989-12-31	126
1990-06-30	77
1990-12-31	179
1991-06-30	229
1991-12-31	22
1992-06-30	11
1992-12-31	11
1993-06-30	8
1993-12-31	10
1994-06-30	14
1994-12-31	0
1995-06-30	0
1995-12-31	0
1996-06-30	9
1996-12-31	36
1997-06-30	183
1997-12-31	117
1998-06-30	70
1998-12-31	143
1999-06-30	162