Bi-annual	US dollars
1987-06-30	23
1987-12-31	47
1988-06-30	43
1988-12-31	51
1989-06-30	26
1989-12-31	21
1990-06-30	19
1990-12-31	206
1991-06-30	10
1991-12-31	6
1992-06-30	76
1992-12-31	45
1993-06-30	42
1993-12-31	41
1994-06-30	83
1994-12-31	59
1995-06-30	266
1995-12-31	198
1996-06-30	172
1996-12-31	50
1997-06-30	38
1997-12-31	8
1998-06-30	7
1998-12-31	10
1999-06-30	11