Quarter	Thousands of Persons, Seasonally Adjusted
2000-07-01	3742
2001-07-01	4130
2002-07-01	4329
2003-07-01	3947
2004-07-01	3659
2005-07-01	4001
2006-07-01	3859
2007-07-01	3623
2008-01-01	4191
2008-04-01	4114
2008-07-01	4122
2008-10-01	3873
2009-01-01	4184
2009-04-01	4125
2009-07-01	4241
2009-10-01	4226
2010-01-01	4395
2010-04-01	4401
2010-07-01	4396
2010-10-01	4137
2011-01-01	4364
2011-04-01	4538
2011-07-01	4442
2011-10-01	4244
2012-01-01	4526