Quarter	Persons, Seasonally Adjusted
2007-01-01	15700
2007-04-01	14400
2007-07-01	14700
2007-10-01	15500
2008-01-01	16700
2008-04-01	14100
2008-07-01	14500
2008-10-01	15000
2009-01-01	13400
2009-04-01	11900
2009-07-01	14200
2009-10-01	15300
2010-01-01	13900
2010-04-01	13200
2010-07-01	14200
2010-10-01	14000
2011-01-01	14100
2011-04-01	15300
2011-07-01	13800
2011-10-01	14400
2012-01-01	14500
2012-04-01	15700
2012-07-01	15300
2012-10-01	14400
2013-01-01	14000
2013-04-01	14600
2013-07-01	14600
2013-10-01	15100
2014-01-01	15700
2014-04-01	13500
2014-07-01	14800
2014-10-01	14200
2015-01-01	16500
2015-04-01	16600
2015-07-01	19300
2015-10-01	18600
2016-01-01	17100
2016-04-01	16700
2016-07-01	17900
2016-10-01	17200
2017-01-01	17600
2017-04-01	18400
2017-07-01	19500
2017-10-01	19600
2018-01-01	19600
2018-04-01	19800