Month Thousands, Seasonally adjusted 2010-01-31 8741 2010-02-28 9155 2010-03-31 8848 2010-04-30 8705 2010-05-31 8843 2010-06-30 9327 2010-07-31 9533 2010-08-31 10175 2010-09-30 10394 2010-10-31 9957 2010-11-30 9763 2010-12-31 9233 2011-01-31 9192 2011-02-28 9258 2011-03-31 8635 2011-04-30 8951 2011-05-31 8643 2011-06-30 9696 2011-07-31 9495 2011-08-31 10269 2011-09-30 10936 2011-10-31 9745 2011-11-30 9582 2011-12-31 11614 2012-01-31 11598 2012-02-29 11950 2012-03-31 13358 2012-04-30 13953 2012-05-31 13936 2012-06-30 14188 2012-07-31 13920 2012-08-31 12645 2012-09-30 13998 2012-10-31 14266 2012-11-30 15149 2012-12-31 15805 2013-01-31 17255 2013-02-28 16140 2013-03-31 17382 2013-04-30 16640 2013-05-31 17387 2013-06-30 16118 2013-07-31 17079 2013-08-31 17746 2013-09-30 17233 2013-10-31 17881 2013-11-30 17741