Quarter	Persons, Seasonally Adjusted
1999-04-01	18941893.011761400
1999-07-01	18966280.448872600
1999-10-01	18979450.184412397
2000-01-01	19011188.810362402
2000-04-01	19060984.932014100
2000-07-01	19091227.081034700
2000-10-01	19114999.176588700
2001-01-01	19143876.987481500
2001-04-01	19194876.419088703
2001-07-01	19231855.668609900
2001-10-01	19235990.924819900
2002-01-01	19276180.560234300
2002-04-01	19297527.520532902
2002-07-01	19330625.097167100
2002-10-01	19349166.822065600
2003-01-01	19398300.676763300
2003-04-01	19425503.412028100
2003-07-01	19471623.807151700
2003-10-01	19491172.104056900
2004-01-01	19540593.447803200
2004-04-01	19573662.146202203
2004-07-01	19615657.222639397
2004-10-01	19674687.183355200
2005-01-01	19740141.788108002
2005-04-01	19761964.543571800
2005-07-01	19811711.338709902
2005-10-01	19866382.329610300
2006-01-01	19960744.815521600
2006-04-01	19993422.823323900
2006-07-01	20042015.819916200
2006-10-01	20090116.541238300
2007-01-01	20137321.308821400
2007-04-01	20190766.177283600
2007-07-01	20245045.508272800
2007-10-01	20289767.005622200
2008-01-01	20303084.796349200
2008-04-01	20339363.129498802
2008-07-01	20381795.916838497
2008-10-01	20396456.157313500
2009-01-01	20411233.791284100
2009-04-01	20443040.226735000
2009-07-01	20448050.971516800
2009-10-01	20511575.010464200
2010-01-01	20536664.989804603
2010-04-01	20546127.767724100
2010-07-01	20577307.231053200
2010-10-01	20632200.011418100
2011-01-01	20659904.765078800
2011-04-01	20677830.670550298
2011-07-01	20679869.588628600
2011-10-01	20673394.975742202
2012-01-01	20665053.759371600
2012-04-01	20679966.834037200
2012-07-01	20654484.039104000
2012-10-01	20640895.367487300
2013-01-01	20648250.793653500
2013-04-01	20667249.890143402
2013-07-01	20644187.362894803
2013-10-01	20716711.953308300
2014-01-01	20707512.812800800
2014-04-01	20714621.544775000
2014-07-01	20717390.236099000
2014-10-01	20765075.406325200
2015-01-01	20754229.207619100
2015-04-01	20777393.835585100
2015-07-01	20805062.225658100
2015-10-01	20821814.731137800
2016-01-01	20811707.870489600
2016-04-01	20797444.656065300
2016-07-01	20818724.858778700
2016-10-01	20836522.614666400
2017-01-01	20836754.356275897
2017-04-01	20858527.217543100
2017-07-01	20875199.564707200
2017-10-01	20888318.861473900
2018-01-01	20917076.959441100
2018-04-01	20926083.159488298