Quarter	Persons, Seasonally Adjusted
1998-01-01	17869040.370979100
1998-04-01	18055750.122397500
1998-07-01	18121939.136405900
1998-10-01	18198270.370217500
1999-01-01	18261433.242869303
1999-04-01	18364142.761479600
1999-07-01	18447953.025328000
1999-10-01	18485770.970323100
2000-01-01	18537619.486486500
2000-04-01	18638325.146922402
2000-07-01	18783201.046814300
2000-10-01	18882454.319776800
2001-01-01	19008634.341897600
2001-04-01	19016549.589072500
2001-07-01	19158242.823596600
2001-10-01	19146573.245433300
2002-01-01	19258437.668421697
2002-04-01	19307516.824136700
2002-07-01	19350385.145711700
2002-10-01	19362260.361729898
2003-01-01	19393210.255648900
2003-04-01	19476207.160875402
2003-07-01	19497486.909914900
2003-10-01	19435395.673560900
2004-01-01	19522499.896752100
2004-04-01	19522796.010572100
2004-07-01	19579599.908938900
2004-10-01	19672204.183736800
2005-01-01	19628086.844283400
2005-04-01	19628233.490155000
2005-07-01	19596049.182123300
2005-10-01	19711530.483438402
2006-01-01	19790005.930817600
2006-04-01	19818706.821958303
2006-07-01	19700626.249258798
2006-10-01	19754260.997965300
2007-01-01	19594167.838736300
2007-04-01	19624437.416495900
2007-07-01	19797980.727194700
2007-10-01	19879014.017573003
2008-01-01	19987845.434561400
2008-04-01	20041980.560832800
2008-07-01	19987085.159172397
2008-10-01	19946188.845433400
2009-01-01	19876858.979426000
2009-04-01	19831326.703067303
2009-07-01	19834282.591650000
2009-10-01	19775531.725856703
2010-01-01	19766115.501572300
2010-04-01	19766844.047067200
2010-07-01	19678501.093805697
2010-10-01	19707239.357554800
2011-01-01	19699262.854091800
2011-04-01	19685991.300795197
2011-07-01	19703664.147297200
2011-10-01	19711081.697815800
2012-01-01	19890048.084190000
2012-04-01	19954522.655447600
2012-07-01	19913699.687867000
2012-10-01	19940929.572495400
2013-01-01	19898683.838959300
2013-04-01	19781485.521038700
2013-07-01	19709875.903822202
2013-10-01	19693554.736179900
2014-01-01	19748379.707118403
2014-04-01	19621794.353626400
2014-07-01	19694579.354599196
2014-10-01	19759846.584656000
2015-01-01	19562209.267509100
2015-04-01	19572837.736752402
2015-07-01	19503975.232939200
2015-10-01	19509377.762799397
2016-01-01	19452923.660823800
2016-04-01	19618430.472675100
2016-07-01	19567785.339137800
2016-10-01	19517960.527363300
2017-01-01	19553049.235643000
2017-04-01	19402109.861245400
2017-07-01	19446321.646540698
2017-10-01	19305119.256570898
2018-01-01	19280548.283175300
2018-04-01	19381766.990307797