Bi-annual	US dollars
1987-06-30	40
1987-12-31	30
1988-06-30	14
1988-12-31	22
1989-06-30	40
1989-12-31	18
1990-06-30	5
1990-12-31	21
1991-06-30	89
1991-12-31	7
1992-06-30	15
1992-12-31	67
1993-06-30	6
1993-12-31	34
1994-06-30	68
1994-12-31	196
1995-06-30	159
1995-12-31	107
1996-06-30	107
1996-12-31	24
1997-06-30	96
1997-12-31	87
1998-06-30	172
1998-12-31	45
1999-06-30	248