Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	9
1988-12-31	16
1989-06-30	8
1989-12-31	10
1990-06-30	10
1990-12-31	12
1991-06-30	8
1991-12-31	9
1992-06-30	11
1992-12-31	2
1993-06-30	14
1993-12-31	16
1994-06-30	28
1994-12-31	56
1995-06-30	32
1995-12-31	37
1996-06-30	44
1996-12-31	50
1997-06-30	43
1997-12-31	41
1998-06-30	52
1998-12-31	43
1999-06-30	36