Bi-annual	US dollars
1987-06-30	216
1987-12-31	191
1988-06-30	244
1988-12-31	362
1989-06-30	90
1989-12-31	132
1990-06-30	127
1990-12-31	93
1991-06-30	60
1991-12-31	19
1992-06-30	175
1992-12-31	129
1993-06-30	75
1993-12-31	180
1994-06-30	15
1994-12-31	258
1995-06-30	14
1995-12-31	8
1996-06-30	6
1996-12-31	22
1997-06-30	5
1997-12-31	7
1998-06-30	52
1998-12-31	2
1999-06-30	2