Quarter	Percent, Seasonally Adjusted
1999-01-01	52.7366153143407
1999-04-01	52.8776079224717
1999-07-01	52.9568951089159
1999-10-01	52.5606335133226
2000-01-01	52.4434416906764
2000-04-01	52.3422535452492
2000-07-01	51.6187418708572
2000-10-01	51.4967403989582
2001-01-01	52.1343506618544
2001-04-01	51.8873282766376
2001-07-01	51.7544687969104
2001-10-01	51.2741403193590
2002-01-01	50.8671976117371
2002-04-01	50.8856504460776
2002-07-01	50.9204466079924
2002-10-01	50.6801734147081
2003-01-01	50.6976264473277
2003-04-01	50.1821867150614
2003-07-01	49.9092720183217
2003-10-01	49.5280387693375
2004-01-01	49.7497427765787
2004-04-01	49.8244169401959
2004-07-01	49.5263082371496
2004-10-01	49.3322684430102
2005-01-01	47.6113587339924
2005-04-01	47.4412051750792
2005-07-01	47.1583409481276
2005-10-01	47.6473124002447
2006-01-01	47.8288080747637
2006-04-01	47.8671177639461
2006-07-01	47.8071048331775
2006-10-01	47.7627542752737
2007-01-01	47.5495689509560
2007-04-01	47.2883752157965
2007-07-01	48.2449820962487
2007-10-01	48.2768723583714
2008-01-01	48.1373354115884
2008-04-01	48.7482347159978
2008-07-01	48.1304515999524
2008-10-01	49.0989340009764
2009-01-01	50.1560951332546
2009-04-01	51.1829386111381
2009-07-01	52.5079912931100
2009-10-01	53.3988441589838
2010-01-01	54.2791298841118
2010-04-01	54.0831441965444
2010-07-01	55.9109434531634
2010-10-01	55.8561443089906
2011-01-01	56.6815992460314
2011-04-01	57.3114034028881
2011-07-01	57.1455149257930
2011-10-01	58.6213589307828
2012-01-01	59.2166522913956
2012-04-01	59.4909229264748
2012-07-01	59.7355483478648
2012-10-01	60.1623434430260
2013-01-01	59.6470305205988
2013-04-01	60.3355924224288
2013-07-01	60.8207583741070
2013-10-01	60.8597085063638
2014-01-01	61.9842310539842
2014-04-01	62.6670128097273
2014-07-01	62.7766559873955
2014-10-01	63.1696747184418
2015-01-01	63.5465165635382
2015-04-01	64.0044979366575
2015-07-01	63.7020261246026
2015-10-01	64.0718130136488
2016-01-01	64.8984760320812
2016-04-01	64.7042233485586
2016-07-01	65.8590522026690
2016-10-01	65.6443907327411
2017-01-01	65.0146360299481
2017-04-01	65.3624110966237
2017-07-01	64.1611262822670
2017-10-01	65.1017335898928
2018-01-01	64.9833191498050
2018-04-01	64.6738037899519
2018-07-01	64.8159943392359