Bi-annual	US dollars
1987-06-30	48
1987-12-31	183
1988-06-30	53
1988-12-31	76
1989-06-30	39
1989-12-31	158
1990-06-30	51
1990-12-31	48
1991-06-30	349
1991-12-31	26
1992-06-30	1673
1992-12-31	2139
1993-06-30	165
1993-12-31	55
1994-06-30	96
1994-12-31	55
1995-06-30	24
1995-12-31	85
1996-06-30	65
1996-12-31	79
1997-06-30	108
1997-12-31	314
1998-06-30	417
1998-12-31	53
1999-06-30	25