Quarter	Percent, Seasonally Adjusted
2000-01-01	54.0712801323990
2000-04-01	55.0519226538729
2000-07-01	54.7741160886509
2000-10-01	54.2982921947365
2001-01-01	54.5676896951715
2001-04-01	54.6921620601166
2001-07-01	55.6575555485056
2001-10-01	55.5898574645291
2002-01-01	55.2366135236076
2002-04-01	55.6338150752958
2002-07-01	55.6956324597572
2002-10-01	55.5950759625068
2003-01-01	55.8903358333716
2003-04-01	56.6465728955450
2003-07-01	57.6361052358230
2003-10-01	58.0555341983297
2004-01-01	57.7425991390852
2004-04-01	57.5823483621168
2004-07-01	56.6475413691389
2004-10-01	57.2508275640636
2005-01-01	57.7378074582768
2005-04-01	58.8812126904557
2005-07-01	58.5857326526832
2005-10-01	59.3183611864715
2006-01-01	61.1362680437551
2006-04-01	62.6324625226673
2006-07-01	62.2453860767328
2006-10-01	62.5998917538059
2007-01-01	62.5900718972192
2007-04-01	63.5935531970145
2007-07-01	63.4595449453069
2007-10-01	62.9380063771532
2008-01-01	63.8167439643518
2008-04-01	63.4408896841476
2008-07-01	63.1252144972787
2008-10-01	63.0060729400994
2009-01-01	59.9616359509766
2009-04-01	57.6453606762172
2009-07-01	57.1813610934671
2009-10-01	55.8990210262987
2010-01-01	54.4917924402019
2010-04-01	54.6304044742803
2010-07-01	55.3548911662908
2010-10-01	57.4080317904420
2011-01-01	58.1295241805699
2011-04-01	58.8578432666756
2011-07-01	60.4560584372534
2011-10-01	59.8810811293800
2012-01-01	60.5862161786914
2012-04-01	61.2162889853513
2012-07-01	61.7358954786463
2012-10-01	60.9961792982466
2013-01-01	61.8724510479451
2013-04-01	63.5373849015894
2013-07-01	62.3173419870775
2013-10-01	61.8296161625338
2014-01-01	61.9676577438955
2014-04-01	63.7790579931858
2014-07-01	63.5019431341577
2014-10-01	63.9853134301022
2015-01-01	64.2566829359290
2015-04-01	65.3176597711718
2015-07-01	66.7336372743280
2015-10-01	65.3555095866619
2016-01-01	65.0976277866196
2016-04-01	67.1708944479084
2016-07-01	66.1547410288968
2016-10-01	65.3605815799743
2017-01-01	67.1000060985178
2017-04-01	67.1214321056890
2017-07-01	67.9839207921946
2017-10-01	68.8231047603712
2018-01-01	67.3812767681527
2018-04-01	68.4054769813286