Quarter Thousands of Persons, Seasonally Adjusted 2000-01-01 15580.63 2000-04-01 15856.24 2000-07-01 15826.99 2000-10-01 16007.29 2001-01-01 15960.66 2001-04-01 15631.75 2001-07-01 15518.72 2001-10-01 15160.65 2002-01-01 14993.79 2002-04-01 15279.92 2002-07-01 15297.82 2002-10-01 15380.40 2003-01-01 15306.95 2003-04-01 15227.76 2003-07-01 15358.94 2003-10-01 15228.93 2004-01-01 15747.94 2004-04-01 15947.68 2004-07-01 15941.62 2004-10-01 16211.86 2005-01-01 14903.77 2005-04-01 14960.81 2005-07-01 14976.35 2005-10-01 15016.19 2006-01-01 14938.73 2006-04-01 15100.33 2006-07-01 15186.18 2006-10-01 15442.91 2007-01-01 15308.38 2007-04-01 15380.60 2007-07-01 15460.36 2007-10-01 15415.80 2008-01-01 15536.59 2008-04-01 15707.73 2008-07-01 15658.72 2008-10-01 15492.27 2009-01-01 15208.17 2009-04-01 15201.14 2009-07-01 15486.03 2009-10-01 15737.37 2010-01-01 15979.47 2010-04-01 16150.69 2010-07-01 16134.07 2010-10-01 16438.24 2011-01-01 17021.13 2011-04-01 16987.02 2011-07-01 17202.18 2011-10-01 17342.52