Bi-annual	US dollars
1987-06-30	32
1987-12-31	55
1988-06-30	38
1988-12-31	69
1989-06-30	42
1989-12-31	94
1990-06-30	155
1990-12-31	21
1991-06-30	26
1991-12-31	21
1992-06-30	27
1992-12-31	20
1993-06-30	20
1993-12-31	24
1994-06-30	82
1994-12-31	2
1995-06-30	11
1995-12-31	133
1996-06-30	39
1996-12-31	43
1997-06-30	175
1997-12-31	86
1998-06-30	283
1998-12-31	200
1999-06-30	186