Bi-annual	US dollars
1987-06-30	129
1987-12-31	177
1988-06-30	143
1988-12-31	76
1989-06-30	180
1989-12-31	214
1990-06-30	204
1990-12-31	95
1991-06-30	183
1991-12-31	155
1992-06-30	160
1992-12-31	242
1993-06-30	161
1993-12-31	208
1994-06-30	145
1994-12-31	156
1995-06-30	62
1995-12-31	70
1996-06-30	245
1996-12-31	185
1997-06-30	118
1997-12-31	87
1998-06-30	57
1998-12-31	324
1999-06-30	43