Quarter	Percent, Seasonally Adjusted
1999-01-01	66.3531128748346
1999-04-01	66.2387081119909
1999-07-01	67.5879359065057
1999-10-01	67.8292792417876
2000-01-01	66.3514828338896
2000-04-01	66.5512484287142
2000-07-01	63.2245492862831
2000-10-01	65.2995840200194
2001-01-01	62.8065100058820
2001-04-01	65.2899160562060
2001-07-01	62.1002765620286
2001-10-01	59.6780020733272
2002-01-01	61.0148589349232
2002-04-01	61.7178512859961
2002-07-01	64.9087435480317
2002-10-01	65.5613413148577
2003-01-01	66.0172935602119
2003-04-01	66.9982486707973
2003-07-01	67.3816795720947
2003-10-01	61.7564856505161
2004-01-01	59.7436264570313
2004-04-01	57.5246625308730
2004-07-01	56.9776228217176
2004-10-01	55.5834006642358
2005-01-01	56.4258564567232
2005-04-01	55.2469847983162
2005-07-01	53.0100690172120
2005-10-01	53.7398998214442
2006-01-01	52.5000511222111
2006-04-01	53.9195542704802
2006-07-01	55.8615401323552
2006-10-01	54.6728869309656
2007-01-01	56.7581024726858
2007-04-01	52.2680041798335
2007-07-01	51.6007246509937
2007-10-01	52.7634148844234
2008-01-01	54.5114377776216
2008-04-01	52.3529192922745
2008-07-01	53.9654662023672
2008-10-01	53.6508179181688
2009-01-01	53.7541547239302
2009-04-01	50.3775072806976
2009-07-01	51.5217377796887
2009-10-01	51.5363964691123
2010-01-01	50.8614266203488
2010-04-01	53.3449507746101
2010-07-01	51.5877742725150
2010-10-01	54.0483122144784
2011-01-01	57.4674270699991
2011-04-01	57.5119208047945
2011-07-01	56.6739767425538
2011-10-01	57.5468467477962
2012-01-01	57.1456159459138
2012-04-01	57.6884993847730
2012-07-01	56.4248369009389
2012-10-01	54.1685314480455
2013-01-01	54.7433450916391
2013-04-01	55.0669467812151
2013-07-01	54.5878624493516
2013-10-01	55.1077322108682
2014-01-01	56.7838692589394
2014-04-01	54.0469374352676
2014-07-01	53.6081945206879
2014-10-01	52.7757356880165
2015-01-01	54.4456734956047
2015-04-01	52.2607376873594
2015-07-01	53.6017544517736
2015-10-01	54.1920469238224
2016-01-01	54.2985854817907
2016-04-01	52.2484321580681
2016-07-01	53.5160401975429
2016-10-01	51.5464959818844
2017-01-01	49.6987100656828
2017-04-01	48.0837751077047
2017-07-01	47.8278437509548
2017-10-01	47.3300790425096
2018-01-01	47.4776217694993
2018-04-01	45.1926969020811