Bi-annual	US dollars
1987-06-30	245
1987-12-31	230
1988-06-30	290
1988-12-31	376
1989-06-30	192
1989-12-31	55
1990-06-30	45
1990-12-31	39
1991-06-30	31
1991-12-31	21
1992-06-30	15
1992-12-31	20
1993-06-30	9
1993-12-31	4
1994-06-30	2
1994-12-31	5
1995-06-30	8
1995-12-31	12
1996-06-30	40
1996-12-31	12
1997-06-30	17
1997-12-31	26
1998-06-30	80
1998-12-31	57
1999-06-30	63