Bi-annual	US dollars
1987-06-30	0
1987-12-31	0
1988-06-30	0
1988-12-31	5
1989-06-30	0
1989-12-31	3
1990-06-30	0
1990-12-31	0
1991-06-30	3
1991-12-31	17
1992-06-30	103
1992-12-31	70
1993-06-30	146
1993-12-31	152
1994-06-30	258
1994-12-31	257
1995-06-30	288
1995-12-31	285
1996-06-30	281
1996-12-31	193
1997-06-30	48
1997-12-31	214
1998-06-30	47
1998-12-31	106
1999-06-30	85