Bi-annual	US dollars
1987-06-30	27
1987-12-31	25
1988-06-30	39
1988-12-31	36
1989-06-30	50
1989-12-31	65
1990-06-30	31
1990-12-31	42
1991-06-30	32
1991-12-31	30
1992-06-30	25
1992-12-31	26
1993-06-30	27
1993-12-31	16
1994-06-30	15
1994-12-31	14
1995-06-30	10
1995-12-31	12
1996-06-30	11
1996-12-31	10
1997-06-30	3
1997-12-31	2
1998-06-30	0
1998-12-31	0
1999-06-30	2