Bi-annual	US dollars
1987-06-30	211
1987-12-31	191
1988-06-30	201
1988-12-31	148
1989-06-30	84
1989-12-31	210
1990-06-30	202
1990-12-31	123
1991-06-30	88
1991-12-31	84
1992-06-30	120
1992-12-31	126
1993-06-30	89
1993-12-31	80
1994-06-30	82
1994-12-31	72
1995-06-30	62
1995-12-31	45
1996-06-30	64
1996-12-31	74
1997-06-30	53
1997-12-31	36
1998-06-30	78
1998-12-31	67
1999-06-30	50