Quarter	US dollars
1999-09-30	1021
1999-12-31	1017
2000-03-31	1010
2000-06-30	987
2000-09-30	1103
2000-12-31	1093
2001-03-31	1052
2001-06-30	1343
2001-09-30	1316
2001-12-31	1176
2002-03-31	1069
2002-06-30	1054
2002-09-30	1095
2002-12-31	1003
2003-03-31	849
2003-06-30	691
2003-09-30	606
2003-12-31	562
2004-03-31	533
2004-06-30	513
2004-09-30	451