Monthly
1997-10-31 14829
1997-11-30 14338
1997-12-31 17836
1998-01-31 15227
1998-02-28 19019
1998-03-31 23219
1998-04-30 24339
1998-05-31 25000
1998-06-30 30991
1998-07-31 33450
1998-08-31 24681
1998-09-30 24452
1998-10-31 30107
1998-11-30 28724
1998-12-31 19617
1999-01-31 13726
1999-02-28 27107
1999-03-31 38074
1999-04-30 31861
1999-05-31 29925
1999-06-30 32167
1999-07-31 32658
1999-08-31 32827
1999-09-30 27409
1999-10-31 29965
1999-11-30 24684
1999-12-31 20669
2000-01-31 21094
2000-02-29 31023
2000-03-31 35772
2000-04-30 31667
2000-05-31 37388
2000-06-30 36918
2000-07-31 32913
2000-08-31 33271
2000-09-30 33244
2000-10-31 35853
2000-11-30 41061
2000-12-31 35821
2001-01-31 36672
2001-02-28 42546
2001-03-31 59599
2001-04-30 51062
2001-05-31 57944
2001-06-30 58196
2001-07-31 60158
2001-08-31 50610
2001-09-30 45963
2001-10-31 53198
2001-11-30 58245
2001-12-31 52463
2002-01-31 58765
2002-02-28 59132
2002-03-31 62318
2002-04-30 67688
2002-05-31 77930
2002-06-30 65366
2002-07-31 76599
2002-08-31 72243
2002-09-30 74819
2002-10-31 83802
2002-11-30 83860
2002-12-31 69192
2003-01-31 68541
2003-02-28 73434
2003-03-31 93903
2003-04-30 99830
2003-05-31 82698
2003-06-30 81761
2003-07-31 85921
2003-08-31 76398
2003-09-30 82508
2003-10-31 89914
2003-11-30 83201
2003-12-31 67302
2004-01-31 63657
2004-02-29 73380
2004-03-31 91274
2004-04-30 75374
2004-05-31 70481
2004-06-30 77431
2004-07-31 74310
2004-08-31 72045
2004-09-30 73736
2004-10-31 74864
2004-11-30 64808
2004-12-31 57304
2005-01-31 59090
2005-02-28 65969
2005-03-31 75724
2005-04-30 74754
2005-05-31 71024
2005-06-30 72792
2005-07-31 71211
2005-08-31 76253
2005-09-30 78687
2005-10-31 78051
2005-11-30 75618
2005-12-31 58717
2006-01-31 55208
2006-02-28 66355
2006-03-31 80578
2006-04-30 62013
2006-05-31 72458
2006-06-30 76381
2006-07-31 65996
2006-08-31 64229
2006-09-30 64523
2006-10-31 75037
2006-11-30 82322
2006-12-31 47067
2007-01-31 53773
2007-02-28 70636
2007-03-31 75330
2007-04-30 63783
2007-05-31 82440
2007-06-30 76315
2007-07-31 73320
2007-08-31 67479
2007-09-30 70223
2007-10-31 68913
2007-11-30 68239
2007-12-31 54517
2008-01-31 73707
2008-02-29 82023
2008-03-31 69863
2008-04-30 87025
2008-05-31 73274
2008-06-30 67274
2008-07-31 59977
2008-08-31 42779
2008-09-30 54982
2008-10-31 61312
2008-11-30 29960
2008-12-31 25821
2009-01-31 25711
2009-02-28 29427
2009-03-31 30208
2009-04-30 26890
2009-05-31 26434
2009-06-30 31119
2009-07-31 33214
2009-08-31 21217
2009-09-30 22173
2009-10-31 21536
2009-11-30 22969
2009-12-31 21121