Monthly
1997-10-31 22131
1997-11-30 20106
1997-12-31 17228
1998-01-31 18013
1998-02-28 22707
1998-03-31 24068
1998-04-30 23575
1998-05-31 24045
1998-06-30 27540
1998-07-31 29959
1998-08-31 25697
1998-09-30 28302
1998-10-31 32640
1998-11-30 31625
1998-12-31 24831
1999-01-31 26781
1999-02-28 35915
1999-03-31 47086
1999-04-30 39818
1999-05-31 37317
1999-06-30 44835
1999-07-31 43341
1999-08-31 41594
1999-09-30 43945
1999-10-31 40866
1999-11-30 41784
1999-12-31 29798
2000-01-31 25481
2000-02-29 35981
2000-03-31 43217
2000-04-30 33639
2000-05-31 38052
2000-06-30 50746
2000-07-31 50911
2000-08-31 46862
2000-09-30 42927
2000-10-31 44599
2000-11-30 46028
2000-12-31 39341
2001-01-31 42616
2001-02-28 45118
2001-03-31 55497
2001-04-30 50832
2001-05-31 52800
2001-06-30 57636
2001-07-31 57123
2001-08-31 55445
2001-09-30 52104
2001-10-31 60708
2001-11-30 60371
2001-12-31 42666
2002-01-31 53420
2002-02-28 52972
2002-03-31 64963
2002-04-30 70646
2002-05-31 74573
2002-06-30 57931
2002-07-31 71592
2002-08-31 69677
2002-09-30 75463
2002-10-31 85160
2002-11-30 77422
2002-12-31 59812
2003-01-31 72484
2003-02-28 77934
2003-03-31 91097
2003-04-30 83467
2003-05-31 86449
2003-06-30 91074
2003-07-31 97840
2003-08-31 88372
2003-09-30 93593
2003-10-31 99427
2003-11-30 78292
2003-12-31 63333
2004-01-31 66199
2004-02-29 77376
2004-03-31 89453
2004-04-30 76867
2004-05-31 72794
2004-06-30 77081
2004-07-31 75863
2004-08-31 69066
2004-09-30 68937
2004-10-31 54350
2004-11-30 51599
2004-12-31 41094
2005-01-31 42235
2005-02-28 50477
2005-03-31 54247
2005-04-30 57312
2005-05-31 55337
2005-06-30 58299
2005-07-31 51692
2005-08-31 55958
2005-09-30 57763
2005-10-31 52371
2005-11-30 51831
2005-12-31 37051
2006-01-31 46282
2006-02-28 49428
2006-03-31 58250
2006-04-30 47854
2006-05-31 54455
2006-06-30 57508
2006-07-31 51259
2006-08-31 55965
2006-09-30 52749
2006-10-31 52898
2006-11-30 55615
2006-12-31 36300
2007-01-31 51057
2007-02-28 49891
2007-03-31 54885
2007-04-30 47864
2007-05-31 53335
2007-06-30 50325
2007-07-31 50421
2007-08-31 47210
2007-09-30 45500
2007-10-31 43737
2007-11-30 42241
2007-12-31 27120
2008-01-31 40066
2008-02-29 45339
2008-03-31 36358
2008-04-30 37153
2008-05-31 32337
2008-06-30 32328
2008-07-31 34882
2008-08-31 28102
2008-09-30 28574
2008-10-31 26238
2008-11-30 21505
2008-12-31 19014
2009-01-31 24311
2009-02-28 24968
2009-03-31 25646
2009-04-30 20790
2009-05-31 20806
2009-06-30 23939
2009-07-31 22785
2009-08-31 19039
2009-09-30 23492
2009-10-31 22990
2009-11-30 20689
2009-12-31 15503