Quarter	US dollars
1999-09-30	461
1999-12-31	471
2000-03-31	464
2000-06-30	492
2000-09-30	504
2000-12-31	492
2001-03-31	496
2001-06-30	499
2001-09-30	541
2001-12-31	569
2002-03-31	627
2002-06-30	508
2002-09-30	591
2002-12-31	587
2003-03-31	661
2003-06-30	703
2003-09-30	663
2003-12-31	630
2004-03-31	634
2004-06-30	597
2004-09-30	679