Quarter	Percent, Seasonally Adjusted
1999-01-01	35.4173912742894
1999-04-01	35.2593581513822
1999-07-01	34.4594502656112
1999-10-01	34.6465851064636
2000-01-01	34.1842022369674
2000-04-01	33.5070362769114
2000-07-01	33.2595137736478
2000-10-01	33.1416261450942
2001-01-01	32.0506458278595
2001-04-01	30.8340880859599
2001-07-01	30.4137169527054
2001-10-01	29.4452369709098
2002-01-01	29.1275922374896
2002-04-01	29.0245563822447
2002-07-01	28.1200802277689
2002-10-01	27.7584000915050
2003-01-01	27.7761041747709
2003-04-01	27.0399720829353
2003-07-01	26.7145762849719
2003-10-01	25.7095915766664
2004-01-01	25.0069400426620
2004-04-01	23.7199780863341
2004-07-01	22.8583274420680
2004-10-01	22.7640993412936
2005-01-01	22.6212441040318
2005-04-01	21.7957093097627
2005-07-01	21.3722168882129
2005-10-01	21.5089933988081
2006-01-01	21.5033739002172
2006-04-01	21.6538609791162
2006-07-01	21.7249883633138
2006-10-01	21.5374555137418
2007-01-01	21.5731801271969
2007-04-01	21.3719041160051
2007-07-01	21.1132624149558
2007-10-01	20.3008070282934
2008-01-01	20.2988032852740
2008-04-01	20.1026578571435
2008-07-01	20.4826563529004
2008-10-01	20.0188624203504
2009-01-01	18.2866278676160
2009-04-01	18.5110356436895
2009-07-01	18.0565935300503
2009-10-01	17.7203736251484
2010-01-01	18.2693338507146
2010-04-01	18.1636514094415
2010-07-01	18.1117566157987
2010-10-01	18.4533817834246
2011-01-01	18.1753518801243
2011-04-01	18.2793389348534
2011-07-01	18.0920156617084
2011-10-01	17.3556702570221
2012-01-01	17.5934322154317
2012-04-01	17.9158567498835
2012-07-01	18.7117365440818
2012-10-01	19.5713191580482
2013-01-01	18.9882153873575
2013-04-01	19.8893864488057
2013-07-01	20.5715309867827
2013-10-01	21.0138776401095
2014-01-01	23.1852931222334
2014-04-01	23.3141987118668
2014-07-01	23.3118223766813
2014-10-01	24.2020284746887
2015-01-01	24.4895774099120
2015-04-01	25.5146772909565
2015-07-01	26.2410028486748
2015-10-01	26.3997222727327
2016-01-01	27.4124108123541
2016-04-01	27.6953321580020
2016-07-01	28.5776888274414
2016-10-01	28.7943943909653
2017-01-01	29.0019867670615
2017-04-01	29.1980186585931
2017-07-01	28.7752940288379
2017-10-01	28.8844199687364
2018-01-01	28.3791101003006
2018-04-01	29.0557729761953