Bi-annual	US dollars
1987-06-30	21
1987-12-31	21
1988-06-30	26
1988-12-31	25
1989-06-30	26
1989-12-31	23
1990-06-30	3
1990-12-31	4
1991-06-30	2
1991-12-31	2
1992-06-30	2
1992-12-31	3
1993-06-30	26
1993-12-31	38
1994-06-30	25
1994-12-31	28
1995-06-30	13
1995-12-31	12
1996-06-30	25
1996-12-31	41
1997-06-30	38
1997-12-31	20
1998-06-30	37
1998-12-31	40
1999-06-30	38