Bi-annual	US dollars
1987-06-30	65
1987-12-31	11
1988-06-30	63
1988-12-31	14
1989-06-30	28
1989-12-31	16
1990-06-30	42
1990-12-31	10
1991-06-30	31
1991-12-31	35
1992-06-30	36
1992-12-31	29
1993-06-30	8
1993-12-31	7
1994-06-30	2
1994-12-31	31
1995-06-30	87
1995-12-31	65
1996-06-30	57
1996-12-31	34
1997-06-30	7
1997-12-31	41
1998-06-30	12
1998-12-31	38
1999-06-30	19