Quarter	Percent, Seasonally Adjusted
1998-01-01	22.5882246399163
1998-04-01	22.4746465923080
1998-07-01	22.2404689567610
1998-10-01	22.3410066585349
1999-01-01	22.3577360031682
1999-04-01	22.6149505878961
1999-07-01	22.6811631600296
1999-10-01	22.4965721768435
2000-01-01	22.6549736032085
2000-04-01	22.4564056298686
2000-07-01	22.5610610756957
2000-10-01	22.6312769211471
2001-01-01	23.2980976957030
2001-04-01	23.1323836560556
2001-07-01	22.9524914443098
2001-10-01	22.8161655463382
2002-01-01	23.1778572637211
2002-04-01	22.7991634662255
2002-07-01	22.6586537539908
2002-10-01	22.4935534740885
2003-01-01	22.2038544927850
2003-04-01	22.3263137560391
2003-07-01	22.3116003267975
2003-10-01	22.2771151417044
2004-01-01	21.6691475213897
2004-04-01	21.6031856288720
2004-07-01	21.8004547204313
2004-10-01	21.7155571430760
2005-01-01	21.6732354244588
2005-04-01	21.6413555476443
2005-07-01	21.6864466876315
2005-10-01	21.5650918738510
2006-01-01	21.3627101407930
2006-04-01	21.5296920477612
2006-07-01	21.6004719486238
2006-10-01	21.5356147079000
2007-01-01	21.6833450797391
2007-04-01	21.8655522084564
2007-07-01	21.4813266666910
2007-10-01	21.5216321464803
2008-01-01	21.5253357817896
2008-04-01	21.4386698871206
2008-07-01	21.6236334924211
2008-10-01	21.6194974158806
2009-01-01	21.6088660788447
2009-04-01	21.5208485853220
2009-07-01	21.2539256101027
2009-10-01	21.4855498292435
2010-01-01	21.3628888757621
2010-04-01	21.5395101141369
2010-07-01	21.8156424204925
2010-10-01	21.8859377251078
2011-01-01	22.3901706552737
2011-04-01	22.5743978379687
2011-07-01	22.9077359723015
2011-10-01	23.1598981923186
2012-01-01	23.1056473801624
2012-04-01	23.1568258971321
2012-07-01	23.3376318383886
2012-10-01	22.9314543076565
2013-01-01	23.1238334611876
2013-04-01	22.9965724160313
2013-07-01	23.1333036356154
2013-10-01	23.3249350912410
2014-01-01	23.4804528917471
2014-04-01	23.9011135857429
2014-07-01	24.0614265805638
2014-10-01	24.4021248649098
2015-01-01	24.4087499181610
2015-04-01	24.3187540192699
2015-07-01	24.0228056114081
2015-10-01	23.7298656867320
2016-01-01	23.9106217849935
2016-04-01	23.8597219996896
2016-07-01	23.7530601397402
2016-10-01	23.8703232002319
2017-01-01	23.6852680386894
2017-04-01	23.5336283039559
2017-07-01	23.4077671602644
2017-10-01	23.5968902338777
2018-01-01	23.5650617173097
2018-04-01	23.4382945281354