Quarter	Percent, Seasonally Adjusted
1999-01-01	41.0100814281709
1999-04-01	42.9698920331445
1999-07-01	44.7082192101653
1999-10-01	46.6774171455611
2000-01-01	46.9385392440495
2000-04-01	50.5014826313962
2000-07-01	50.9968484120846
2000-10-01	53.1920945091151
2001-01-01	52.0091257814510
2001-04-01	52.5833300393170
2001-07-01	52.6500190089571
2001-10-01	52.3050129025551
2002-01-01	51.0955420810138
2002-04-01	51.5110239304974
2002-07-01	50.2494333629667
2002-10-01	50.5076835964046
2003-01-01	48.4348076197412
2003-04-01	48.2720084909029
2003-07-01	49.6922162687388
2003-10-01	48.0588081415581
2004-01-01	49.5613819630299
2004-04-01	52.5061068097669
2004-07-01	51.8305036055536
2004-10-01	50.5455671281052
2005-01-01	51.8385018809220
2005-04-01	51.4622240604027
2005-07-01	49.6589823898375
2005-10-01	51.4839628227561
2006-01-01	53.6291043685980
2006-04-01	54.5475632917317
2006-07-01	53.7943646558310
2006-10-01	53.0042780347329
2007-01-01	52.0992127178490
2007-04-01	50.9896642670569
2007-07-01	49.5806184948757
2007-10-01	45.7914258293223
2008-01-01	48.6095725043681
2008-04-01	45.5063140838722
2008-07-01	45.7610347780586
2008-10-01	41.2314627043220
2009-01-01	37.4618642351189
2009-04-01	35.0623655843124
2009-07-01	38.0181224886060
2009-10-01	39.4126188079565
2010-01-01	42.5411918742175
2010-04-01	46.8364786809279
2010-07-01	51.5945960416183
2010-10-01	54.0292420266471
2011-01-01	54.7393555902105
2011-04-01	56.8356925425732
2011-07-01	59.3681115678623
2011-10-01	59.1333569681041
2012-01-01	60.9903755192075
2012-04-01	61.9569120021986
2012-07-01	60.7903565605377
2012-10-01	61.6062258039030
2013-01-01	61.4383198439298
2013-04-01	58.4056899631291
2013-07-01	58.6295576109623
2013-10-01	57.5730628102741
2014-01-01	57.1458783880585
2014-04-01	55.9598296306543
2014-07-01	55.5439592693394
2014-10-01	56.5649371674659
2015-01-01	55.6484359119724
2015-04-01	54.1332532089740
2015-07-01	53.3016969260428
2015-10-01	52.3195131732504
2016-01-01	51.2625103580143
2016-04-01	51.7932564791372
2016-07-01	50.6774497213991
2016-10-01	52.7838064886389
2017-01-01	54.4049385159846
2017-04-01	55.0729649477480
2017-07-01	56.2121189060976
2017-10-01	53.7785838152743
2018-01-01	54.4752285815450
2018-04-01	55.3345806557924