Quarter	Thousands of Persons, Seasonally Adjusted
1998-04-01	64
1999-04-01	69
2000-01-01	71
2000-04-01	71
2000-07-01	71
2000-10-01	71
2001-01-01	74
2001-04-01	74
2001-07-01	74
2001-10-01	74
2002-01-01	75
2002-04-01	75
2002-07-01	75
2002-10-01	75
2003-01-01	76
2003-04-01	76
2003-07-01	76
2003-10-01	76
2004-01-01	77
2004-04-01	77
2004-07-01	77
2004-10-01	77
2005-01-01	81
2005-04-01	81
2005-07-01	81
2005-10-01	81
2006-01-01	84
2006-04-01	84
2006-07-01	84
2006-10-01	84
2007-01-01	89
2007-04-01	86
2007-07-01	89
2007-10-01	92
2008-01-01	85
2008-04-01	89
2008-07-01	86
2008-10-01	87
2009-01-01	93
2009-04-01	93
2009-07-01	94
2009-10-01	93
2010-01-01	95
2010-04-01	95
2010-07-01	96
2010-10-01	97
2011-01-01	98
2011-04-01	96
2011-07-01	97
2011-10-01	99