Bi-annual	US dollars
1987-06-30	15
1987-12-31	9
1988-06-30	17
1988-12-31	5
1989-06-30	5
1989-12-31	2
1990-06-30	3
1990-12-31	6
1991-06-30	2
1991-12-31	13
1992-06-30	32
1992-12-31	24
1993-06-30	23
1993-12-31	16
1994-06-30	9
1994-12-31	5
1995-06-30	6
1995-12-31	16
1996-06-30	8
1996-12-31	74
1997-06-30	121
1997-12-31	8
1998-06-30	58
1998-12-31	95
1999-06-30	2