Bi-annual	US dollars
1987-06-30	15
1987-12-31	13
1988-06-30	15
1988-12-31	14
1989-06-30	8
1989-12-31	29
1990-06-30	24
1990-12-31	42
1991-06-30	10
1991-12-31	7
1992-06-30	4
1992-12-31	79
1993-06-30	99
1993-12-31	52
1994-06-30	43
1994-12-31	47
1995-06-30	25
1995-12-31	93
1996-06-30	57
1996-12-31	65
1997-06-30	43
1997-12-31	35
1998-06-30	33
1998-12-31	28
1999-06-30	44