Bi-annual	US dollars
1987-06-30	5
1987-12-31	0
1988-06-30	0
1988-12-31	2
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	0
1991-06-30	2
1991-12-31	2
1992-06-30	2
1992-12-31	5
1993-06-30	12
1993-12-31	6
1994-06-30	6
1994-12-31	5
1995-06-30	17
1995-12-31	8
1996-06-30	16
1996-12-31	14
1997-06-30	20
1997-12-31	15
1998-06-30	13
1998-12-31	22
1999-06-30	30