Bi-annual	US dollars
1987-06-30	21
1987-12-31	51
1988-06-30	53
1988-12-31	52
1989-06-30	29
1989-12-31	29
1990-06-30	30
1990-12-31	29
1991-06-30	29
1991-12-31	28
1992-06-30	30
1992-12-31	29
1993-06-30	29
1993-12-31	30
1994-06-30	29
1994-12-31	28
1995-06-30	29
1995-12-31	0
1996-06-30	0
1996-12-31	0
1997-06-30	7
1997-12-31	2
1998-06-30	2
1998-12-31	2
1999-06-30	5