Quarter	US dollars
1999-09-30	19218
1999-12-31	20666
2000-03-31	18793
2000-06-30	16875
2000-09-30	21336
2000-12-31	18976
2001-03-31	17565
2001-06-30	21919
2001-09-30	19915
2001-12-31	19540
2002-03-31	15535
2002-06-30	16556
2002-09-30	17042
2002-12-31	18061
2003-03-31	19071
2003-06-30	27967
2003-09-30	20493
2003-12-31	21259
2004-03-31	20822
2004-06-30	21139
2004-09-30	22853