Month	Thousands
2010-01-31	11423
2010-02-28	17211
2010-03-31	20502
2010-04-30	17815
2010-05-31	16677
2010-06-30	20557
2010-07-31	19828
2010-08-31	18832
2010-09-30	20605
2010-10-31	19213
2010-11-30	20015
2010-12-31	13011
2011-01-31	12230
2011-02-28	17536
2011-03-31	21880
2011-04-30	18567
2011-05-31	18597
2011-06-30	21470
2011-07-31	19268
2011-08-31	21235
2011-09-30	24386
2011-10-31	20133
2011-11-30	20836
2011-12-31	17230
2012-01-31	16162
2012-02-29	21020
2012-03-31	27260
2012-04-30	23617
2012-05-31	27597
2012-06-30	25503
2012-07-31	25470
2012-08-31	21817
2012-09-30	24063
2012-10-31	25016
2012-11-30	24836
2012-12-31	18607
2013-01-31	21017
2013-02-28	24444
2013-03-31	30616
2013-04-30	30941
2013-05-31	31265
2013-06-30	28728
2013-07-31	33037
2013-08-31	29770
2013-09-30	28009
2013-10-31	30660
2013-11-30	29046