Bi-annual	US dollars
1987-06-30	163
1987-12-31	140
1988-06-30	147
1988-12-31	107
1989-06-30	110
1989-12-31	60
1990-06-30	51
1990-12-31	44
1991-06-30	41
1991-12-31	32
1992-06-30	44
1992-12-31	95
1993-06-30	57
1993-12-31	24
1994-06-30	20
1994-12-31	17
1995-06-30	16
1995-12-31	8
1996-06-30	6
1996-12-31	7
1997-06-30	7
1997-12-31	5
1998-06-30	5
1998-12-31	3
1999-06-30	3