Bi-annual	US dollars
1987-06-30	224
1987-12-31	157
1988-06-30	142
1988-12-31	118
1989-06-30	115
1989-12-31	90
1990-06-30	82
1990-12-31	51
1991-06-30	31
1991-12-31	26
1992-06-30	33
1992-12-31	29
1993-06-30	19
1993-12-31	31
1994-06-30	9
1994-12-31	25
1995-06-30	38
1995-12-31	39
1996-06-30	24
1996-12-31	24
1997-06-30	43
1997-12-31	93
1998-06-30	80
1998-12-31	137
1999-06-30	174