Quarter	Percent, Seasonally Adjusted
1999-01-01	38.7365956164644
1999-04-01	36.8966156903428
1999-07-01	40.1215752201067
1999-10-01	37.8210401507053
2000-01-01	38.1670081740263
2000-04-01	40.0945908334679
2000-07-01	39.0639229132050
2000-10-01	37.3272944996934
2001-01-01	38.9550253931321
2001-04-01	38.5170454067102
2001-07-01	43.4800559708036
2001-10-01	37.5415458598145
2002-01-01	36.9491715756587
2002-04-01	38.6777777626593
2002-07-01	40.0992698135056
2002-10-01	39.7665154081390
2003-01-01	37.5114458152351
2003-04-01	39.3851103989338
2003-07-01	37.5925356852075
2003-10-01	39.2688485848355
2004-01-01	37.9595596224046
2004-04-01	37.1849540701316
2004-07-01	38.3779429073988
2004-10-01	37.0973360807151
2005-01-01	38.8372582313468
2005-04-01	36.0899196849974
2005-07-01	37.6504057081736
2005-10-01	37.9590434751806
2006-01-01	39.9379666543911
2006-04-01	37.1776847555411
2006-07-01	34.4624268240089
2006-10-01	37.9363475630614
2007-01-01	36.7047299022705
2007-04-01	36.5126491815850
2007-07-01	35.4970061704761
2007-10-01	35.7467515851089
2008-01-01	36.6776502561545
2008-04-01	35.6041960382282
2008-07-01	36.1257278193150
2008-10-01	35.4693416794354
2009-01-01	35.0199320738843
2009-04-01	35.6066350985059
2009-07-01	33.5641538776955
2009-10-01	35.4025847999467
2010-01-01	33.8519683587066
2010-04-01	35.6664028997714
2010-07-01	36.4159760746918
2010-10-01	34.8015629230968
2011-01-01	34.8984441211540
2011-04-01	33.0755971480660
2011-07-01	33.3491128752382
2011-10-01	35.1777958517625
2012-01-01	35.5002205101166
2012-04-01	35.9105041285279
2012-07-01	32.8843023766783
2012-10-01	35.5377258259911
2013-01-01	33.3593906460114
2013-04-01	35.3158622405026
2013-07-01	33.4824015675119
2013-10-01	32.4877772426504
2014-01-01	32.5402363721567
2014-04-01	31.6569736999580
2014-07-01	32.2362529064194
2014-10-01	32.5999449874944
2015-01-01	34.4120319112633
2015-04-01	32.4226407844070
2015-07-01	32.1035297581813
2015-10-01	32.2690710295225
2016-01-01	31.4271809778964
2016-04-01	31.5758672970623
2016-07-01	29.1377310096966
2016-10-01	30.6222681090426
2017-01-01	30.3109415023823
2017-04-01	30.0141343391079
2017-07-01	32.9061816435128
2017-10-01	29.2933891736238
2018-01-01	29.2209764681566
2018-04-01	31.5556797075889