Bi-annual	US dollars
1987-06-30	56
1987-12-31	49
1988-06-30	63
1988-12-31	74
1989-06-30	65
1989-12-31	56
1990-06-30	23
1990-12-31	305
1991-06-30	31
1991-12-31	43
1992-06-30	21
1992-12-31	38
1993-06-30	42
1993-12-31	37
1994-06-30	17
1994-12-31	2
1995-06-30	2
1995-12-31	0
1996-06-30	62
1996-12-31	5
1997-06-30	42
1997-12-31	127
1998-06-30	53
1998-12-31	82
1999-06-30	199