Quarter	US dollars
1999-09-30	481
1999-12-31	472
2000-03-31	504
2000-06-30	494
2000-09-30	531
2000-12-31	522
2001-03-31	545
2001-06-30	542
2001-09-30	542
2001-12-31	541
2002-03-31	543
2002-06-30	568
2002-09-30	554
2002-12-31	571
2003-03-31	580
2003-06-30	601
2003-09-30	635
2003-12-31	657
2004-03-31	663
2004-06-30	638
2004-09-30	682