Bi-annual	US dollars
1987-06-30	163
1987-12-31	202
1988-06-30	162
1988-12-31	166
1989-06-30	198
1989-12-31	156
1990-06-30	157
1990-12-31	158
1991-06-30	151
1991-12-31	293
1992-06-30	209
1992-12-31	203
1993-06-30	188
1993-12-31	118
1994-06-30	60
1994-12-31	52
1995-06-30	43
1995-12-31	17
1996-06-30	23
1996-12-31	22
1997-06-30	17
1997-12-31	23
1998-06-30	22
1998-12-31	25
1999-06-30	22