Bi-annual	US dollars
1987-06-30	266
1987-12-31	260
1988-06-30	179
1988-12-31	201
1989-06-30	144
1989-12-31	137
1990-06-30	202
1990-12-31	106
1991-06-30	44
1991-12-31	52
1992-06-30	72
1992-12-31	103
1993-06-30	165
1993-12-31	80
1994-06-30	130
1994-12-31	38
1995-06-30	134
1995-12-31	20
1996-06-30	17
1996-12-31	22
1997-06-30	23
1997-12-31	16
1998-06-30	65
1998-12-31	60
1999-06-30	132