Bi-annual	US dollars
1987-06-30	82
1987-12-31	83
1988-06-30	73
1988-12-31	101
1989-06-30	62
1989-12-31	42
1990-06-30	82
1990-12-31	71
1991-06-30	57
1991-12-31	24
1992-06-30	25
1992-12-31	17
1993-06-30	114
1993-12-31	19
1994-06-30	133
1994-12-31	81
1995-06-30	97
1995-12-31	144
1996-06-30	169
1996-12-31	128
1997-06-30	180
1997-12-31	418
1998-06-30	392
1998-12-31	216
1999-06-30	169