Quarter	US dollars
1999-09-30	2936
1999-12-31	2686
2000-03-31	3037
2000-06-30	3473
2000-09-30	3552
2000-12-31	3592
2001-03-31	4177
2001-06-30	3867
2001-09-30	3712
2001-12-31	2933
2002-03-31	3018
2002-06-30	3389
2002-09-30	3612
2002-12-31	3190
2003-03-31	3493
2003-06-30	3460
2003-09-30	3668
2003-12-31	4222
2004-03-31	4554
2004-06-30	3968
2004-09-30	4290