Bi-annual	US dollars
1987-06-30	0
1987-12-31	2
1988-06-30	3
1988-12-31	2
1989-06-30	0
1989-12-31	0
1990-06-30	8
1990-12-31	17
1991-06-30	37
1991-12-31	16
1992-06-30	74
1992-12-31	45
1993-06-30	69
1993-12-31	82
1994-06-30	103
1994-12-31	114
1995-06-30	158
1995-12-31	169
1996-06-30	200
1996-12-31	140
1997-06-30	262
1997-12-31	179
1998-06-30	196
1998-12-31	127
1999-06-30	228