Bi-annual	US dollars
1987-06-30	114
1987-12-31	187
1988-06-30	87
1988-12-31	146
1989-06-30	91
1989-12-31	42
1990-06-30	96
1990-12-31	73
1991-06-30	50
1991-12-31	49
1992-06-30	38
1992-12-31	33
1993-06-30	32
1993-12-31	195
1994-06-30	198
1994-12-31	174
1995-06-30	5
1995-12-31	5
1996-06-30	5
1996-12-31	7
1997-06-30	27
1997-12-31	0
1998-06-30	0
1998-12-31	0
1999-06-30	0