Quarter	Thousands of Persons, Seasonally Adjusted
1998-01-01	207.8970
1998-04-01	204.0370
1998-07-01	201.5914
1998-10-01	201.9197
1999-01-01	214.1684
1999-04-01	221.7261
1999-07-01	225.9320
1999-10-01	230.7175
2000-01-01	211.5563
2000-04-01	215.9103
2000-07-01	209.1270
2000-10-01	196.2884
2001-01-01	192.9847
2001-04-01	199.3957
2001-07-01	202.1720
2001-10-01	210.8459
2002-01-01	201.1830
2002-04-01	188.0241
2002-07-01	188.0772
2002-10-01	185.4408
2003-01-01	180.8852
2003-04-01	177.8397
2003-07-01	172.5878
2003-10-01	172.6941
2004-01-01	196.4373
2004-04-01	189.3840
2004-07-01	186.2210
2004-10-01	180.3851
2005-01-01	173.7148
2005-04-01	173.7871
2005-07-01	183.1285
2005-10-01	172.2842
2006-01-01	168.7819
2006-04-01	167.2844
2006-07-01	156.7784
2006-10-01	156.4951
2007-01-01	154.2269
2007-04-01	149.4116
2007-07-01	151.0862
2007-10-01	149.6025
2008-01-01	149.6502
2008-04-01	141.4638
2008-07-01	145.5341
2008-10-01	154.4892
2009-01-01	182.5482
2009-04-01	191.1495
2009-07-01	205.9150
2009-10-01	221.7402
2010-01-01	244.1933
2010-04-01	282.1376
2010-07-01	300.5158
2010-10-01	331.9931
2011-01-01	355.1727
2011-04-01	406.6267
2011-07-01	456.2393
2011-10-01	503.7277