Bi-annual	US dollars
1987-06-30	5
1987-12-31	4
1988-06-30	0
1988-12-31	0
1989-06-30	9
1989-12-31	2
1990-06-30	3
1990-12-31	2
1991-06-30	5
1991-12-31	6
1992-06-30	25
1992-12-31	71
1993-06-30	107
1993-12-31	50
1994-06-30	97
1994-12-31	103
1995-06-30	80
1995-12-31	78
1996-06-30	76
1996-12-31	80
1997-06-30	83
1997-12-31	107
1998-06-30	178
1998-12-31	111
1999-06-30	107