Quarter	Percent, Seasonally Adjusted
1998-01-01	55.3005735743963
1998-04-01	55.9588937048669
1998-07-01	56.6080026088970
1998-10-01	56.1375291434464
1999-01-01	56.6921894839839
1999-04-01	55.2605961394062
1999-07-01	55.1667069291191
1999-10-01	55.7955464551902
2000-01-01	55.7367457606474
2000-04-01	55.6835619978500
2000-07-01	55.1958162631411
2000-10-01	54.2741163831218
2001-01-01	55.8442746828914
2001-04-01	54.8833067306853
2001-07-01	54.8439300633119
2001-10-01	55.4574467966664
2002-01-01	54.6818832540699
2002-04-01	55.2632914745286
2002-07-01	56.4173682206815
2002-10-01	57.2701721324073
2003-01-01	57.8333163182379
2003-04-01	58.3282090834712
2003-07-01	58.8304425127231
2003-10-01	59.8578923111536
2004-01-01	55.5401352089521
2004-04-01	56.3580403858203
2004-07-01	56.6162321270612
2004-10-01	57.0827929487740
2005-01-01	58.1063409719403
2005-04-01	58.8103083374612
2005-07-01	59.2364403014135
2005-10-01	59.0214065656286
2006-01-01	59.2690563531930
2006-04-01	59.3013734710797
2006-07-01	59.2516379862764
2006-10-01	58.9325260753103
2007-01-01	58.4381604764055
2007-04-01	58.6119069102348
2007-07-01	59.7242171871841
2007-10-01	59.5937562254244
2008-01-01	59.5679756399972
2008-04-01	59.1742392861058
2008-07-01	58.9666563910996
2008-10-01	59.0883262371345
2009-01-01	57.7926009656157
2009-04-01	57.9129929395820
2009-07-01	57.7337865151869
2009-10-01	57.5748822998694
2010-01-01	57.3110847849590
2010-04-01	56.6084817267861
2010-07-01	56.4949871707838
2010-10-01	55.7638988702830
2011-01-01	54.7674466222369
2011-04-01	53.9017453072378
2011-07-01	51.0644739465106
2011-10-01	49.6396765234767
2012-01-01	49.0395932570591
2012-04-01	48.0514643217936
2012-07-01	46.8812426789914
2012-10-01	46.8194448779000
2013-01-01	45.9019765716591
2013-04-01	46.5024958586933
2013-07-01	46.2921440987922
2013-10-01	45.1318310097962
2014-01-01	45.2009313131852
2014-04-01	44.1353059651253
2014-07-01	43.4144326804190
2014-10-01	43.1024336282805
2015-01-01	43.5828409361825
2015-04-01	44.5017719262849
2015-07-01	45.3252265571548
2015-10-01	46.3138033970172
2016-01-01	45.8747096704762
2016-04-01	45.3893796386890
2016-07-01	46.8054909871959
2016-10-01	46.7788225293384
2017-01-01	47.9433084789624
2017-04-01	49.0477649814174
2017-07-01	50.3054937853678
2017-10-01	51.0120389746206
2018-01-01	51.8431565730195
2018-04-01	52.7533332121533