Bi-annual	US dollars
1987-06-30	79
1987-12-31	79
1988-06-30	19
1988-12-31	11
1989-06-30	19
1989-12-31	18
1990-06-30	14
1990-12-31	14
1991-06-30	21
1991-12-31	2
1992-06-30	19
1992-12-31	48
1993-06-30	66
1993-12-31	56
1994-06-30	54
1994-12-31	59
1995-06-30	76
1995-12-31	37
1996-06-30	93
1996-12-31	12
1997-06-30	10
1997-12-31	3
1998-06-30	47
1998-12-31	57
1999-06-30	16