Bi-annual	US dollars
1987-06-30	32
1987-12-31	32
1988-06-30	26
1988-12-31	27
1989-06-30	25
1989-12-31	19
1990-06-30	12
1990-12-31	14
1991-06-30	8
1991-12-31	17
1992-06-30	17
1992-12-31	14
1993-06-30	20
1993-12-31	24
1994-06-30	23
1994-12-31	27
1995-06-30	24
1995-12-31	37
1996-06-30	51
1996-12-31	62
1997-06-30	62
1997-12-31	49
1998-06-30	73
1998-12-31	111
1999-06-30	102