Quarter	US dollars
1999-09-30	2373
1999-12-31	1456
2000-03-31	1681
2000-06-30	1611
2000-09-30	1524
2000-12-31	1770
2001-03-31	1605
2001-06-30	1484
2001-09-30	1374
2001-12-31	1217
2002-03-31	1111
2002-06-30	1128
2002-09-30	1054
2002-12-31	1008
2003-03-31	1026
2003-06-30	957
2003-09-30	1072
2003-12-31	1520
2004-03-31	1632
2004-06-30	1839
2004-09-30	2265