Bi-annual	US dollars
1987-06-30	13
1987-12-31	8
1988-06-30	9
1988-12-31	5
1989-06-30	16
1989-12-31	15
1990-06-30	9
1990-12-31	12
1991-06-30	5
1991-12-31	11
1992-06-30	11
1992-12-31	11
1993-06-30	92
1993-12-31	47
1994-06-30	93
1994-12-31	14
1995-06-30	22
1995-12-31	29
1996-06-30	23
1996-12-31	33
1997-06-30	48
1997-12-31	107
1998-06-30	98
1998-12-31	103
1999-06-30	87