Quarter	Percent, Seasonally Adjusted
1998-01-01	42.0242511017570
1998-04-01	42.0854119908205
1998-07-01	42.2228792158489
1998-10-01	42.3091450763691
1999-01-01	42.4292611242535
1999-04-01	42.5528841708887
1999-07-01	42.6385656308796
1999-10-01	42.7265119458109
2000-01-01	42.7422600652953
2000-04-01	43.0707072924717
2000-07-01	43.3446847213036
2000-10-01	43.7239394534459
2001-01-01	43.8277725056610
2001-04-01	43.8015636367613
2001-07-01	44.0121744084078
2001-10-01	44.1128282474473
2002-01-01	44.3765613172548
2002-04-01	44.3371239967154
2002-07-01	44.4923938066950
2002-10-01	44.5901408081557
2003-01-01	44.7469687664977
2003-04-01	44.8536012773279
2003-07-01	44.9943883207388
2003-10-01	44.9671524400883
2004-01-01	45.5227716892209
2004-04-01	45.6393769727589
2004-07-01	45.6524259628804
2004-10-01	45.6527454906165
2005-01-01	45.4397598672100
2005-04-01	45.3145103538029
2005-07-01	45.1433443845416
2005-10-01	45.3594177527571
2006-01-01	45.7235538198605
2006-04-01	45.8950615705121
2006-07-01	45.6826988102949
2006-10-01	45.7035196062576
2007-01-01	45.5828971151623
2007-04-01	45.7228965396004
2007-07-01	45.9662542489835
2007-10-01	45.8890847189376
2008-01-01	45.9176648815987
2008-04-01	45.9163778371165
2008-07-01	45.8499484667264
2008-10-01	45.5187415177342
2009-01-01	45.0780756492868
2009-04-01	44.8645427519600
2009-07-01	44.5710985862694
2009-10-01	44.3720996338036
2010-01-01	44.2985563933337
2010-04-01	44.2095856110230
2010-07-01	44.0245537671188
2010-10-01	44.1631545967503
2011-01-01	44.2817453639246
2011-04-01	44.1520493891338
2011-07-01	44.0600972706594
2011-10-01	43.9824325969810
2012-01-01	43.9783365495288
2012-04-01	43.9691237895491
2012-07-01	43.8548812248627
2012-10-01	43.6137389834982
2013-01-01	43.1774219037094
2013-04-01	42.8123726617135
2013-07-01	42.7062182913960
2013-10-01	42.7666699978452
2014-01-01	42.7653075825040
2014-04-01	42.7807830212315
2014-07-01	42.8517810653034
2014-10-01	42.9481730787659
2015-01-01	42.9849304799891
2015-04-01	42.9895106871374
2015-07-01	43.2745932215706
2015-10-01	43.3237361737945
2016-01-01	43.4883584609315
2016-04-01	43.7925746519531
2016-07-01	43.7231689547690
2016-10-01	43.8597019527477
2017-01-01	44.1201956017491
2017-04-01	44.0916692456541
2017-07-01	44.2757159715251
2017-10-01	44.4335568136849
2018-01-01	44.4663376147771
2018-04-01	44.8126150032685