Bi-annual	US dollars
1987-06-30	74
1987-12-31	51
1988-06-30	73
1988-12-31	94
1989-06-30	101
1989-12-31	79
1990-06-30	78
1990-12-31	93
1991-06-30	52
1991-12-31	37
1992-06-30	13
1992-12-31	15
1993-06-30	24
1993-12-31	16
1994-06-30	8
1994-12-31	17
1995-06-30	21
1995-12-31	3
1996-06-30	31
1996-12-31	9
1997-06-30	33
1997-12-31	41
1998-06-30	32
1998-12-31	25
1999-06-30	17