Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	0
1988-12-31	2
1989-06-30	3
1989-12-31	5
1990-06-30	2
1990-12-31	4
1991-06-30	2
1991-12-31	2
1992-06-30	10
1992-12-31	5
1993-06-30	11
1993-12-31	7
1994-06-30	20
1994-12-31	16
1995-06-30	29
1995-12-31	22
1996-06-30	11
1996-12-31	24
1997-06-30	23
1997-12-31	21
1998-06-30	32
1998-12-31	20
1999-06-30	27