Bi-annual	US dollars
1987-06-30	32
1987-12-31	53
1988-06-30	61
1988-12-31	49
1989-06-30	50
1989-12-31	89
1990-06-30	61
1990-12-31	66
1991-06-30	18
1991-12-31	21
1992-06-30	29
1992-12-31	24
1993-06-30	6
1993-12-31	41
1994-06-30	35
1994-12-31	33
1995-06-30	25
1995-12-31	23
1996-06-30	0
1996-12-31	0
1997-06-30	15
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	2