Bi-annual	US dollars
1987-06-30	66
1987-12-31	77
1988-06-30	60
1988-12-31	143
1989-06-30	62
1989-12-31	24
1990-06-30	5
1990-12-31	4
1991-06-30	15
1991-12-31	15
1992-06-30	11
1992-12-31	9
1993-06-30	0
1993-12-31	31
1994-06-30	17
1994-12-31	17
1995-06-30	19
1995-12-31	12
1996-06-30	16
1996-12-31	17
1997-06-30	37
1997-12-31	38
1998-06-30	57
1998-12-31	67
1999-06-30	88