Quarter	Percent, Seasonally Adjusted
2001-01-01	22.1117017788641
2001-04-01	22.1837262238804
2001-07-01	22.1375107689678
2001-10-01	22.1449927189395
2002-01-01	22.1950660605475
2002-04-01	22.4339394971229
2002-07-01	22.4536945126478
2002-10-01	22.5239193680666
2003-01-01	22.6570144754367
2003-04-01	22.5593721110703
2003-07-01	22.7671705416932
2003-10-01	22.7369295891661
2004-01-01	22.6937322226661
2004-04-01	22.9213002678074
2004-07-01	22.6990183540972
2004-10-01	22.9886125698247
2005-01-01	23.1045781029263
2005-04-01	21.1867159504902
2005-07-01	21.5510141050485
2005-10-01	21.2590082934129
2006-01-01	21.3789400588028
2006-04-01	21.2751962155360
2006-07-01	21.1083669901503
2006-10-01	21.1968648844323
2007-01-01	20.9874530758657
2007-04-01	20.9969821289429
2007-07-01	20.7664258128424
2007-10-01	20.7001984803728
2008-01-01	20.6517585033600
2008-04-01	20.5678566981691
2008-07-01	20.6152418152396
2008-10-01	20.7835882152517
2009-01-01	20.8520701385124
2009-04-01	20.8728037675741
2009-07-01	21.4076288085867
2009-10-01	21.1722305716887
2010-01-01	21.1708821249447
2010-04-01	20.9962254854250
2010-07-01	20.7426472887717
2010-10-01	20.7309805901359
2011-01-01	20.2827801395061
2011-04-01	20.0848315191757
2011-07-01	20.0803282770893
2011-10-01	19.8473232332739
2012-01-01	20.0112689846062
2012-04-01	19.7681079133794
2012-07-01	19.5924256438434
2012-10-01	19.4441595001105
2013-01-01	19.1403401509660
2013-04-01	19.0163597783118
2013-07-01	18.8171835648598
2013-10-01	18.6504340620058
2014-01-01	18.7147582595797
2014-04-01	18.6269419418323
2014-07-01	18.1194165713294
2014-10-01	18.5666730674551
2015-01-01	18.3511297326114
2015-04-01	18.3585827450410
2015-07-01	18.2698638647611
2015-10-01	18.0461645241573
2016-01-01	18.0063784620226
2016-04-01	17.8788462868735
2016-07-01	18.0119905664594
2016-10-01	17.8111676842285
2017-01-01	17.5358001653099
2017-04-01	17.5936018311574
2017-07-01	17.3466509917103
2017-10-01	17.4441214754038
2018-01-01	17.4486162077484
2018-04-01	17.2393677453574