Quarter	US dollars
1999-09-30	3870
1999-12-31	3671
2000-03-31	4065
2000-06-30	4560
2000-09-30	5226
2000-12-31	5657
2001-03-31	5060
2001-06-30	4839
2001-09-30	5323
2001-12-31	5016
2002-03-31	5295
2002-06-30	5728
2002-09-30	5548
2002-12-31	5968
2003-03-31	6396
2003-06-30	5944
2003-09-30	5634
2003-12-31	6659
2004-03-31	6203
2004-06-30	6081
2004-09-30	6595