Quarter	Persons, Seasonally Adjusted
1998-04-01	521900.0000000000
1999-04-01	532400.0000000000
2000-04-01	537200.0000000000
2001-04-01	533100.0000000000
2002-04-01	551900.0000000000
2003-04-01	541300.0000000000
2004-04-01	535200.0000000000
2005-04-01	524100.0000000000
2006-04-01	559700.0000000000
2007-04-01	558900.0000000000
2008-04-01	565800.0000000000
2009-04-01	564800.0000000000
2010-01-01	572228.3185898140
2010-04-01	570064.8805622400
2010-07-01	586151.4691643651
2010-10-01	583155.3316835801
2011-01-01	585810.0684926720
2011-04-01	587599.0496385321
2011-07-01	589191.9235371530
2011-10-01	582598.9583316421
2012-01-01	580542.5485226569
2012-04-01	573617.0834930640
2012-07-01	579802.9496846020
2012-10-01	570737.4182996770
2013-01-01	581923.8218528581
2013-04-01	570885.6823483631
2013-07-01	572233.0971822011
2013-10-01	585057.3986165780
2014-01-01	571839.1383348190
2014-04-01	571589.9233579530
2014-07-01	565682.2126693280
2014-10-01	596088.7256379000
2015-01-01	575845.4212867390
2015-04-01	568826.6928536420
2015-07-01	563519.7341161240
2015-10-01	571108.1517434950
2016-01-01	578582.7524656791
2016-04-01	568661.8868631660
2016-07-01	566825.6026413420
2016-10-01	581129.7580298120
2017-01-01	581953.8366835360
2017-04-01	566762.9686769961
2017-07-01	568317.4499293020
2017-10-01	569665.7447101660
2018-01-01	558256.3052836991
2018-04-01	553621.1318811560