Bi-annual	US dollars
1987-06-30	35
1987-12-31	38
1988-06-30	12
1988-12-31	38
1989-06-30	34
1989-12-31	11
1990-06-30	28
1990-12-31	19
1991-06-30	13
1991-12-31	15
1992-06-30	89
1992-12-31	133
1993-06-30	150
1993-12-31	340
1994-06-30	244
1994-12-31	58
1995-06-30	16
1995-12-31	19
1996-06-30	31
1996-12-31	7
1997-06-30	-37
1997-12-31	3
1998-06-30	10
1998-12-31	22
1999-06-30	20