Bi-annual	US dollars
1987-06-30	27
1987-12-31	13
1988-06-30	32
1988-12-31	51
1989-06-30	28
1989-12-31	19
1990-06-30	28
1990-12-31	25
1991-06-30	10
1991-12-31	54
1992-06-30	11
1992-12-31	65
1993-06-30	47
1993-12-31	34
1994-06-30	83
1994-12-31	100
1995-06-30	108
1995-12-31	127
1996-06-30	117
1996-12-31	67
1997-06-30	111
1997-12-31	105
1998-06-30	90
1998-12-31	155
1999-06-30	43