Bi-annual	US dollars
1987-06-30	306
1987-12-31	268
1988-06-30	174
1988-12-31	107
1989-06-30	110
1989-12-31	111
1990-06-30	91
1990-12-31	93
1991-06-30	63
1991-12-31	65
1992-06-30	141
1992-12-31	148
1993-06-30	161
1993-12-31	223
1994-06-30	284
1994-12-31	610
1995-06-30	619
1995-12-31	730
1996-06-30	553
1996-12-31	707
1997-06-30	670
1997-12-31	1170
1998-06-30	1207
1998-12-31	1050
1999-06-30	1216