Bi-annual	US dollars
1987-06-30	68
1987-12-31	66
1988-06-30	242
1988-12-31	125
1989-06-30	203
1989-12-31	65
1990-06-30	47
1990-12-31	46
1991-06-30	62
1991-12-31	24
1992-06-30	36
1992-12-31	67
1993-06-30	75
1993-12-31	78
1994-06-30	91
1994-12-31	75
1995-06-30	59
1995-12-31	42
1996-06-30	36
1996-12-31	46
1997-06-30	47
1997-12-31	324
1998-06-30	148
1998-12-31	82
1999-06-30	6