Bi-annual	US dollars
1987-06-30	2
1987-12-31	0
1988-06-30	2
1988-12-31	4
1989-06-30	2
1989-12-31	2
1990-06-30	2
1990-12-31	4
1991-06-30	3
1991-12-31	24
1992-06-30	4
1992-12-31	3
1993-06-30	3
1993-12-31	4
1994-06-30	2
1994-12-31	3
1995-06-30	3
1995-12-31	3
1996-06-30	2
1996-12-31	7
1997-06-30	13
1997-12-31	8
1998-06-30	17
1998-12-31	10
1999-06-30	20