Bi-annual	US dollars
1987-06-30	11
1987-12-31	11
1988-06-30	14
1988-12-31	16
1989-06-30	23
1989-12-31	26
1990-06-30	21
1990-12-31	10
1991-06-30	18
1991-12-31	49
1992-06-30	19
1992-12-31	23
1993-06-30	17
1993-12-31	13
1994-06-30	12
1994-12-31	16
1995-06-30	11
1995-12-31	12
1996-06-30	14
1996-12-31	2
1997-06-30	2
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	2