Bi-annual	US dollars
1987-06-30	11
1987-12-31	0
1988-06-30	5
1988-12-31	13
1989-06-30	3
1989-12-31	5
1990-06-30	2
1990-12-31	0
1991-06-30	2
1991-12-31	26
1992-06-30	19
1992-12-31	5
1993-06-30	18
1993-12-31	170
1994-06-30	182
1994-12-31	181
1995-06-30	185
1995-12-31	186
1996-06-30	269
1996-12-31	168
1997-06-30	150
1997-12-31	189
1998-06-30	265
1998-12-31	213
1999-06-30	233