Bi-annual	US dollars
1987-06-30	152
1987-12-31	4
1988-06-30	20
1988-12-31	14
1989-06-30	12
1989-12-31	6
1990-06-30	72
1990-12-31	93
1991-06-30	28
1991-12-31	116
1992-06-30	51
1992-12-31	48
1993-06-30	17
1993-12-31	16
1994-06-30	9
1994-12-31	9
1995-06-30	22
1995-12-31	9
1996-06-30	9
1996-12-31	12
1997-06-30	22
1997-12-31	67
1998-06-30	47
1998-12-31	78
1999-06-30	58