Quarter	Percent, Seasonally Adjusted
1999-01-01	54.8222646176740
1999-04-01	54.6101085119743
1999-07-01	54.4635785388762
1999-10-01	54.4089150252626
2000-01-01	54.4596047102848
2000-04-01	54.2945997638594
2000-07-01	54.2438780789321
2000-10-01	53.9103607007140
2001-01-01	54.4116019257741
2001-04-01	54.7070699206090
2001-07-01	54.5249645546482
2001-10-01	54.8186052154349
2002-01-01	54.5206012412219
2002-04-01	54.3042048780540
2002-07-01	54.1723142856937
2002-10-01	53.8934516784822
2003-01-01	53.4552153710141
2003-04-01	53.1123980307200
2003-07-01	53.0072779278995
2003-10-01	52.7859814177587
2004-01-01	52.9467858009740
2004-04-01	53.1566451298206
2004-07-01	53.1468337680622
2004-10-01	52.7603274386657
2005-01-01	52.4653450604890
2005-04-01	52.2005160280019
2005-07-01	52.1025305991069
2005-10-01	52.1640779076122
2006-01-01	51.7390573835334
2006-04-01	51.7977984655732
2006-07-01	51.8383442205729
2006-10-01	51.8125737804427
2007-01-01	52.1112849880956
2007-04-01	52.2680675669458
2007-07-01	52.2963220528743
2007-10-01	52.2062736762292
2008-01-01	52.5853472722041
2008-04-01	52.7324074950397
2008-07-01	52.2787830230634
2008-10-01	52.1599230699532
2009-01-01	52.4071144418034
2009-04-01	52.3530015996399
2009-07-01	52.3794401586489
2009-10-01	51.9713231782776
2010-01-01	51.2920446809538
2010-04-01	51.1660894212349
2010-07-01	51.0379581182724
2010-10-01	51.2044494751809
2011-01-01	51.2388409001997
2011-04-01	50.8662698038618
2011-07-01	50.9299644044046
2011-10-01	50.6109588081828
2012-01-01	50.2881986145277
2012-04-01	49.7882651454681
2012-07-01	49.3716953988055
2012-10-01	49.5667874650770
2013-01-01	49.8368029562353
2013-04-01	49.5325578552752
2013-07-01	49.5387796186393
2013-10-01	49.0834199228539
2014-01-01	48.2132569977701
2014-04-01	48.0067502137061
2014-07-01	47.7746081108615
2014-10-01	47.6079958070774
2015-01-01	47.0481886980084
2015-04-01	46.8224519560485
2015-07-01	46.6731340291110
2015-10-01	46.6648089357222
2016-01-01	46.3170967858216
2016-04-01	46.1037404207674
2016-07-01	45.7694454857489
2016-10-01	45.4573678877153
2017-01-01	45.6510683053752
2017-04-01	45.4410414468163
2017-07-01	45.3335816143927
2017-10-01	45.2594983433542
2018-01-01	45.0002709217552
2018-04-01	44.8871833937218