Monthly Thousands
1997-10-31 97275
1997-11-30 89080
1997-12-31 75921
1998-01-31 67371
1998-02-28 91108
1998-03-31 112509
1998-04-30 108463
1998-05-31 112109
1998-06-30 130713
1998-07-31 132605
1998-08-31 106510
1998-09-30 108557
1998-10-31 123040
1998-11-30 114956
1998-12-31 82668
1999-01-31 71673
1999-02-28 114996
1999-03-31 158137
1999-04-30 139655
1999-05-31 135134
1999-06-30 157254
1999-07-31 151973
1999-08-31 138792
1999-09-30 138397
1999-10-31 142237
1999-11-30 127023
1999-12-31 96627
2000-01-31 83260
2000-02-29 128518
2000-03-31 159153
2000-04-30 134016
2000-05-31 152270
2000-06-30 161302
2000-07-31 145965
2000-08-31 138108
2000-09-30 132531
2000-10-31 141205
2000-11-30 150726
2000-12-31 120808
2001-01-31 124648
2001-02-28 146580
2001-03-31 204916
2001-04-30 187016
2001-05-31 212327
2001-06-30 221833
2001-07-31 219020
2001-08-31 197425
2001-09-30 174438
2001-10-31 194331
2001-11-30 194165
2001-12-31 152476
2002-01-31 176318
2002-02-28 196421
2002-03-31 229669
2002-04-30 246781
2002-05-31 267365
2002-06-30 213992
2002-07-31 249841
2002-08-31 224557
2002-09-30 235508
2002-10-31 261039
2002-11-30 244678
2002-12-31 184917
2003-01-31 192777
2003-02-28 212898
2003-03-31 261649
2003-04-30 265853
2003-05-31 251894
2003-06-30 261733
2003-07-31 279666
2003-08-31 251114
2003-09-30 267415
2003-10-31 285347
2003-11-30 245714
2003-12-31 197613
2004-01-31 188313
2004-02-29 228739
2004-03-31 283162
2004-04-30 243699
2004-05-31 236462
2004-06-30 248719
2004-07-31 227054
2004-08-31 209044
2004-09-30 207190
2004-10-31 191591
2004-11-30 167010
2004-12-31 141250
2005-01-31 137218
2005-02-28 166898
2005-03-31 199491
2005-04-30 205643
2005-05-31 198203
2005-06-30 207925
2005-07-31 194436
2005-08-31 207556
2005-09-30 212231
2005-10-31 203950
2005-11-30 201906
2005-12-31 152445
2006-01-31 151027
2006-02-28 178598
2006-03-31 230533
2006-04-30 178847
2006-05-31 213746
2006-06-30 225797
2006-07-31 192250
2006-08-31 196291
2006-09-30 193770
2006-10-31 207292
2006-11-30 221034
2006-12-31 132876
2007-01-31 151005
2007-02-28 180744
2007-03-31 211422
2007-04-30 181746
2007-05-31 220072
2007-06-30 209286
2007-07-31 197013
2007-08-31 181150
2007-09-30 173688
2007-10-31 168035
2007-11-30 159853
2007-12-31 112684
2008-01-31 146078
2008-02-29 171647
2008-03-31 149298
2008-04-30 170633
2008-05-31 141794
2008-06-30 129182
2008-07-31 122264
2008-08-31 92136
2008-09-30 109351
2008-10-31 113697
2008-11-30 68976
2008-12-31 62584
2009-01-31 67707
2009-02-28 82105
2009-03-31 91811
2009-04-30 84249
2009-05-31 87831
2009-06-30 103236
2009-07-31 106487
2009-08-31 81247
2009-09-30 93172
2009-10-31 90961
2009-11-30 87320
2009-12-31 70300