Bi-annual	US dollars
1987-06-30	69
1987-12-31	202
1988-06-30	143
1988-12-31	221
1989-06-30	200
1989-12-31	248
1990-06-30	267
1990-12-31	328
1991-06-30	238
1991-12-31	118
1992-06-30	72
1992-12-31	144
1993-06-30	101
1993-12-31	157
1994-06-30	201
1994-12-31	205
1995-06-30	259
1995-12-31	349
1996-06-30	238
1996-12-31	274
1997-06-30	318
1997-12-31	219
1998-06-30	272
1998-12-31	275
1999-06-30	192