Quarter	Percent, Seasonally Adjusted
1999-01-01	24.9093765390133
1999-04-01	24.3443174829678
1999-07-01	23.3810821611376
1999-10-01	21.8876559977258
2000-01-01	17.5751745174236
2000-04-01	21.1818386260408
2000-07-01	21.8110833559614
2000-10-01	20.3345406865342
2001-01-01	16.0792197761104
2001-04-01	19.0242788417273
2001-07-01	16.9631064420987
2001-10-01	19.9443023596935
2002-01-01	19.7876211188765
2002-04-01	17.3013535391049
2002-07-01	17.5552211280907
2002-10-01	19.0656423292355
2003-01-01	21.4839386652457
2003-04-01	19.4143148237943
2003-07-01	22.3297956654101
2003-10-01	20.6808791406428
2004-01-01	21.2345694823216
2004-04-01	22.7014369065590
2004-07-01	22.8888396542471
2004-10-01	22.8723415195469
2005-01-01	23.3626524856891
2005-04-01	21.8310613294932
2005-07-01	21.6893582332633
2005-10-01	22.0115967461975
2006-01-01	21.6879162537978
2006-04-01	21.4632220089873
2006-07-01	24.9256150840932
2006-10-01	22.2352141570026
2007-01-01	21.1500581968839
2007-04-01	24.4635200928189
2007-07-01	18.9453874172724
2007-10-01	18.6811023457312
2008-01-01	17.3115825497097
2008-04-01	15.6655238844751
2008-07-01	21.8804682909710
2008-10-01	20.4096378129920
2009-01-01	22.3950282094680
2009-04-01	23.1032012564709
2009-07-01	21.2291422722435
2009-10-01	23.0742312153507
2010-01-01	25.7790905114708
2010-04-01	21.4872989262712
2010-07-01	20.8426843866929
2010-10-01	21.2478426053557
2011-01-01	18.4074733222847
2011-04-01	18.4174897812330
2011-07-01	21.9107761367985
2011-10-01	16.1770895329854
2012-01-01	18.7070475389281
2012-04-01	17.4481470690900
2012-07-01	18.7212563625883
2012-10-01	20.5167354793960
2013-01-01	21.7017204792423
2013-04-01	23.7283845722982
2013-07-01	21.8359659313608
2013-10-01	22.5699288502250
2014-01-01	26.2882212121197
2014-04-01	24.6844265311568
2014-07-01	17.9934877877268
2014-10-01	20.2396865744532
2015-01-01	20.2122178930788
2015-04-01	17.1581318991376
2015-07-01	19.6929447672262
2015-10-01	23.1966838057447
2016-01-01	19.1486965909709
2016-04-01	17.4105970203080
2016-07-01	19.6129159204636
2016-10-01	16.4291920706411
2017-01-01	18.9663314137938
2017-04-01	21.0215474049306
2017-07-01	15.6023305993676
2017-10-01	16.8608144186645
2018-01-01	15.4234737675809
2018-04-01	18.0353590498318