Bi-annual	US dollars
1987-06-30	2
1987-12-31	6
1988-06-30	22
1988-12-31	4
1989-06-30	0
1989-12-31	0
1990-06-30	0
1990-12-31	2
1991-06-30	2
1991-12-31	0
1992-06-30	49
1992-12-31	44
1993-06-30	42
1993-12-31	46
1994-06-30	43
1994-12-31	22
1995-06-30	25
1995-12-31	39
1996-06-30	42
1996-12-31	24
1997-06-30	30
1997-12-31	31
1998-06-30	30
1998-12-31	17
1999-06-30	22