Quarter	Percent, Seasonally Adjusted
2001-01-01	69.4589615882758
2001-04-01	69.4341522293679
2001-07-01	70.3291088988633
2001-10-01	70.6949146588040
2002-01-01	70.9168508438546
2002-04-01	71.4636421045193
2002-07-01	71.2540312619978
2002-10-01	71.3042581317081
2003-01-01	71.3617114306022
2003-04-01	71.9128735443816
2003-07-01	72.2542450064041
2003-10-01	72.1779331822812
2004-01-01	72.3441404152776
2004-04-01	72.7177064607517
2004-07-01	72.9638133645051
2004-10-01	72.7374957282141
2005-01-01	72.9838117520961
2005-04-01	72.0499730703348
2005-07-01	72.6732594832054
2005-10-01	73.1810352243624
2006-01-01	73.5327705635348
2006-04-01	72.8554733546077
2006-07-01	72.4449214985661
2006-10-01	72.4813351273359
2007-01-01	72.5679406412229
2007-04-01	72.9465120046286
2007-07-01	73.1207174871529
2007-10-01	72.7484865034039
2008-01-01	72.3920339182832
2008-04-01	72.6249798765672
2008-07-01	72.9957009675552
2008-10-01	73.1446650950591
2009-01-01	73.6845521613564
2009-04-01	73.4690790496218
2009-07-01	73.8924608231103
2009-10-01	74.4349508429904
2010-01-01	74.4132359454220
2010-04-01	74.4707410990579
2010-07-01	74.9583436873061
2010-10-01	75.2379255901129
2011-01-01	75.6109892388784
2011-04-01	76.1669356021013
2011-07-01	75.9257201814949
2011-10-01	76.2537021332334
2012-01-01	76.2743773985713
2012-04-01	76.9991217709287
2012-07-01	76.9650532358192
2012-10-01	77.6060195452165
2013-01-01	77.2023862358468
2013-04-01	77.2919069931641
2013-07-01	77.5770759869720
2013-10-01	77.9935745753691
2014-01-01	77.9379021259554
2014-04-01	78.4050344975254
2014-07-01	78.2693142273352
2014-10-01	78.2397518090653
2015-01-01	78.5487330273082
2015-04-01	78.5415453596038
2015-07-01	78.4024171482802
2015-10-01	79.1378890185945
2016-01-01	79.1587988538341
2016-04-01	79.4367082888879
2016-07-01	80.1848480322497
2016-10-01	80.0594213379861
2017-01-01	80.3589818582736
2017-04-01	80.8477153745798
2017-07-01	80.6046071137293
2017-10-01	80.2843353083392
2018-01-01	80.9341957788218
2018-04-01	81.3598481825793