Month	Thousands
2001-01-31	28340
2001-02-28	35157
2001-03-31	43302
2001-04-30	32383
2001-05-31	39573
2001-06-30	38471
2001-07-31	39830
2001-08-31	40193
2001-09-30	35589
2001-10-31	41415
2001-11-30	42924
2001-12-31	31320
2002-01-31	35976
2002-02-28	44454
2002-03-31	48021
2002-04-30	52902
2002-05-31	57981
2002-06-30	43717
2002-07-31	53536
2002-08-31	46818
2002-09-30	43815
2002-10-31	53876
2002-11-30	53000
2002-12-31	43749
2003-01-31	42148
2003-02-28	47949
2003-03-31	63524
2003-04-30	58343
2003-05-31	59307
2003-06-30	64719
2003-07-31	62659
2003-08-31	59445
2003-09-30	71240
2003-10-31	67371
2003-11-30	56468
2003-12-31	44752
2004-01-31	39312
2004-02-29	49770
2004-03-31	66569
2004-04-30	53796
2004-05-31	59082
2004-06-30	63415
2004-07-31	60277
2004-08-31	46042
2004-09-30	39007
2004-10-31	40828
2004-11-30	41612
2004-12-31	33146
2005-01-31	28842
2005-02-28	40668
2005-03-31	52520
2005-04-30	48727
2005-05-31	46323
2005-06-30	53046
2005-07-31	51482
2005-08-31	52573
2005-09-30	50811
2005-10-31	48620
2005-11-30	50464
2005-12-31	36613
2006-01-31	35761
2006-02-28	44112
2006-03-31	60791
2006-04-30	46011
2006-05-31	59340
2006-06-30	61862
2006-07-31	56500
2006-08-31	59477
2006-09-30	52670
2006-10-31	51082
2006-11-30	47711
2006-12-31	39816
2007-01-31	44332
2007-02-28	49686
2007-03-31	58679
2007-04-30	43364
2007-05-31	54565
2007-06-30	49566
2007-07-31	48147
2007-08-31	48117
2007-09-30	43659
2007-10-31	45623
2007-11-30	45985
2007-12-31	32860
2008-01-31	37896
2008-02-29	41201
2008-03-31	36174
2008-04-30	39689
2008-05-31	30244
2008-06-30	32197
2008-07-31	31316
2008-08-31	31592
2008-09-30	30909
2008-10-31	32166
2008-11-30	23068
2008-12-31	12004
2009-01-31	8381
2009-02-28	12707
2009-03-31	21050
2009-04-30	19957
2009-05-31	20268
2009-06-30	23128
2009-07-31	19716
2009-08-31	16427
2009-09-30	19817
2009-10-31	18947
2009-11-30	16644
2009-12-31	13024