Quarter	Percent, Seasonally Adjusted
1999-01-01	36.1609073007484
1999-04-01	35.1810936837804
1999-07-01	35.8648675730093
1999-10-01	35.5567755085378
2000-01-01	36.3470435314716
2000-04-01	36.1490655398726
2000-07-01	35.1811968545669
2000-10-01	35.5694926927924
2001-01-01	35.0514344335470
2001-04-01	35.3063312289190
2001-07-01	34.7729693776372
2001-10-01	35.4833192963872
2002-01-01	34.0006626933531
2002-04-01	35.2483486651363
2002-07-01	37.0542232694463
2002-10-01	37.1638436831786
2003-01-01	36.5041716839928
2003-04-01	36.8273246476948
2003-07-01	37.3972581379337
2003-10-01	35.4426903971926
2004-01-01	34.5360086523311
2004-04-01	34.4526062101910
2004-07-01	33.5516475159518
2004-10-01	34.0504780545080
2005-01-01	34.0998252559584
2005-04-01	34.6287593924655
2005-07-01	33.9715033199115
2005-10-01	33.3652458752361
2006-01-01	34.0927693962116
2006-04-01	34.2189497947674
2006-07-01	34.2538228013789
2006-10-01	34.7807202044350
2007-01-01	34.0755665017428
2007-04-01	33.2133027399691
2007-07-01	33.3580678499664
2007-10-01	33.8481388848313
2008-01-01	34.4052001090449
2008-04-01	34.5841413362929
2008-07-01	33.6864657400164
2008-10-01	34.8054578802380
2009-01-01	35.7408168907909
2009-04-01	34.4037437469992
2009-07-01	33.9420388391870
2009-10-01	34.0834725585365
2010-01-01	34.2437662312085
2010-04-01	34.9769885039169
2010-07-01	35.1136778418541
2010-10-01	34.5573220998243
2011-01-01	35.6748130556048
2011-04-01	36.2723798560191
2011-07-01	36.5342991107004
2011-10-01	36.6686740462470
2012-01-01	36.8973888853442
2012-04-01	37.5025855351884
2012-07-01	37.1442807669535
2012-10-01	36.2928200411333
2013-01-01	36.7463833604686
2013-04-01	36.8774305666749
2013-07-01	37.0902771607059
2013-10-01	36.9640886801209
2014-01-01	36.9267349038921
2014-04-01	36.4913494887288
2014-07-01	36.9023577749043
2014-10-01	36.4829803580762
2015-01-01	36.8543665051467
2015-04-01	36.6845621018209
2015-07-01	36.7963020215495
2015-10-01	38.0139229733671
2016-01-01	38.6770131683679
2016-04-01	38.6202595304084
2016-07-01	39.0697246966533
2016-10-01	38.3372179207050
2017-01-01	36.9330533631393
2017-04-01	36.8243252687601
2017-07-01	36.7368178054958
2017-10-01	36.8170026304845
2018-01-01	36.2385031768928
2018-04-01	35.5410675535362