Quarter	Thousands of Persons, Seasonally Adjusted
1997-10-01	71.8889
1998-01-01	58.8129
1998-04-01	48.8159
1998-07-01	44.4078
1998-10-01	40.3812
1999-01-01	37.3341
1999-04-01	39.8361
1999-07-01	38.4681
1999-10-01	36.7054
2000-01-01	34.3136
2000-04-01	31.8449
2000-07-01	28.2424
2000-10-01	28.0877
2001-01-01	28.2567
2001-04-01	27.4758
2001-07-01	28.9656
2001-10-01	27.8387
2002-01-01	31.5674
2002-04-01	30.6894
2002-07-01	30.6872
2002-10-01	33.2569
2003-01-01	33.6552
2003-04-01	33.6710
2003-07-01	36.5771
2003-10-01	33.8068
2004-01-01	33.4083
2004-04-01	32.7343
2004-07-01	32.8765
2004-10-01	34.3838
2005-01-01	32.5971
2005-04-01	34.0527
2005-07-01	34.1738
2005-10-01	37.4616
2006-01-01	38.1699
2006-04-01	37.8995
2006-07-01	39.4994
2006-10-01	36.4886
2007-01-01	39.5941
2007-04-01	41.5018
2007-07-01	39.5769
2007-10-01	39.5070
2008-01-01	37.2207
2008-04-01	38.5006
2008-07-01	50.0512
2008-10-01	51.6668
2009-01-01	68.7923
2009-04-01	77.5399
2009-07-01	80.3293
2009-10-01	80.9631
2010-01-01	85.0440
2010-04-01	92.8811
2010-07-01	89.7540
2010-10-01	98.9810
2011-01-01	99.3261
2011-04-01	97.8396
2011-07-01	100.3940
2011-10-01	102.8751