Bi-annual	US dollars
1987-06-30	67
1987-12-31	39
1988-06-30	22
1988-12-31	210
1989-06-30	23
1989-12-31	148
1990-06-30	54
1990-12-31	56
1991-06-30	35
1991-12-31	49
1992-06-30	36
1992-12-31	0
1993-06-30	0
1993-12-31	292
1994-06-30	228
1994-12-31	223
1995-06-30	108
1995-12-31	107
1996-06-30	38
1996-12-31	43
1997-06-30	154
1997-12-31	57
1998-06-30	208
1998-12-31	124
1999-06-30	114