Bi-annual	US dollars
1987-06-30	39
1987-12-31	30
1988-06-30	67
1988-12-31	199
1989-06-30	50
1989-12-31	39
1990-06-30	44
1990-12-31	44
1991-06-30	50
1991-12-31	90
1992-06-30	120
1992-12-31	118
1993-06-30	179
1993-12-31	207
1994-06-30	309
1994-12-31	447
1995-06-30	590
1995-12-31	620
1996-06-30	611
1996-12-31	817
1997-06-30	933
1997-12-31	1372
1998-06-30	1177
1998-12-31	1233
1999-06-30	1126