Quarter	Percent, Seasonally Adjusted
1999-04-01	17.0205315950416
1999-07-01	16.8217761437279
1999-10-01	16.8838316885609
2000-01-01	17.1196275603062
2000-04-01	16.9011128925541
2000-07-01	17.1211629744821
2000-10-01	17.3536649340077
2001-01-01	17.1396210343031
2001-04-01	17.4829158001688
2001-07-01	17.3475649196493
2001-10-01	17.4646778892218
2002-01-01	17.6450219370495
2002-04-01	17.7033934126227
2002-07-01	17.7082372134193
2002-10-01	17.4103580230751
2003-01-01	17.5560230233744
2003-04-01	17.5624918316452
2003-07-01	17.4601983759188
2003-10-01	17.6984372101416
2004-01-01	17.6300178508510
2004-04-01	17.9401369141931
2004-07-01	18.0121163532587
2004-10-01	17.8588089242247
2005-01-01	17.7154791528632
2005-04-01	18.1367071054972
2005-07-01	18.0535960116239
2005-10-01	17.8490753243244
2006-01-01	17.8831942847178
2006-04-01	17.7344222673184
2006-07-01	17.3851708643615
2006-10-01	17.7609331651364
2007-01-01	17.7900963733589
2007-04-01	17.7993589469137
2007-07-01	17.8413779832992
2007-10-01	17.7588975297737
2008-01-01	17.6402594611084
2008-04-01	17.5518270238872
2008-07-01	17.6515711417096
2008-10-01	17.4070841520592
2009-01-01	17.4542103878448
2009-04-01	17.9312377730962
2009-07-01	18.2081008250195
2009-10-01	18.5779670885431
2010-01-01	18.7876552363745
2010-04-01	18.4145274677128
2010-07-01	18.2127505305535
2010-10-01	18.3875272359474
2011-01-01	18.6017982321379
2011-04-01	18.4543103329346
2011-07-01	18.5399355197072
2011-10-01	18.3644657805400
2012-01-01	18.2831311054489
2012-04-01	17.9329041593946
2012-07-01	17.9243869412710
2012-10-01	17.9367917423987
2013-01-01	18.1982427577602
2013-04-01	17.9573766154363
2013-07-01	17.6341259233750
2013-10-01	17.8049900331593
2014-01-01	17.7702466659266
2014-04-01	17.7114368010302
2014-07-01	17.7834602521041
2014-10-01	18.0849207085231
2015-01-01	17.8852488356363
2015-04-01	18.0426845727732
2015-07-01	17.9188515774221
2015-10-01	17.4672050864499
2016-01-01	17.3953150889929
2016-04-01	17.4216116536197
2016-07-01	17.6812164038994
2016-10-01	17.7005476235202
2017-01-01	17.6276658268616
2017-04-01	17.4300744825013
2017-07-01	17.9588629901989
2017-10-01	17.6327776656631
2018-01-01	17.3376782101911
2018-04-01	17.4119806088905