Month Thousands of Persons, Seasonally Adjusted 2005-01-01 14846.51 2005-02-01 14903.77 2005-03-01 14891.31 2005-04-01 14926.00 2005-05-01 14960.81 2005-06-01 14964.49 2005-07-01 14996.06 2005-08-01 14976.35 2005-09-01 14994.18 2005-10-01 14975.83 2005-11-01 15016.19 2005-12-01 15025.36 2006-01-01 15032.17 2006-02-01 14938.73 2006-03-01 15070.01 2006-04-01 15093.94 2006-05-01 15100.33 2006-06-01 15094.66 2006-07-01 15113.67 2006-08-01 15186.18 2006-09-01 15251.28 2006-10-01 15310.98 2006-11-01 15442.91 2006-12-01 15391.50 2007-01-01 15420.33 2007-02-01 15308.38 2007-03-01 15391.05 2007-04-01 15375.42 2007-05-01 15380.60 2007-06-01 15394.63 2007-07-01 15425.57 2007-08-01 15460.36 2007-09-01 15541.98 2007-10-01 15438.14 2007-11-01 15415.80 2007-12-01 15446.75 2008-01-01 15487.28 2008-02-01 15536.59 2008-03-01 15540.50 2008-04-01 15655.08 2008-05-01 15707.73 2008-06-01 15711.71 2008-07-01 15662.66 2008-08-01 15658.72 2008-09-01 15634.99 2008-10-01 15670.43 2008-11-01 15492.27 2008-12-01 15402.26 2009-01-01 15233.62 2009-02-01 15208.17 2009-03-01 15158.28 2009-04-01 15050.58 2009-05-01 15201.14 2009-06-01 15289.45 2009-07-01 15434.56 2009-08-01 15486.03 2009-09-01 15568.74 2009-10-01 15697.64 2009-11-01 15737.37 2009-12-01 15824.62 2010-01-01 15859.46 2010-02-01 15979.47 2010-03-01 16020.38 2010-04-01 16121.22 2010-05-01 16150.69 2010-06-01 16177.28 2010-07-01 16181.42 2010-08-01 16134.07 2010-09-01 16181.18 2010-10-01 16286.39 2010-11-01 16438.24 2010-12-01 16612.99 2011-01-01 16808.79 2011-02-01 17021.13 2011-03-01 17014.30 2011-04-01 17018.11 2011-05-01 16987.02 2011-06-01 17062.84 2011-07-01 17080.46 2011-08-01 17202.18 2011-09-01 17281.94 2011-10-01 17256.54 2011-11-01 17342.52 2011-12-01 17260.72 2012-01-01 17407.59