Bi-annual	US dollars
1987-06-30	26
1987-12-31	34
1988-06-30	32
1988-12-31	38
1989-06-30	31
1989-12-31	29
1990-06-30	26
1990-12-31	27
1991-06-30	16
1991-12-31	15
1992-06-30	13
1992-12-31	8
1993-06-30	6
1993-12-31	1
1994-06-30	2
1994-12-31	2
1995-06-30	2
1995-12-31	3
1996-06-30	9
1996-12-31	2
1997-06-30	2
1997-12-31	3
1998-06-30	3
1998-12-31	2
1999-06-30	2