Quarter	Percent, Seasonally Adjusted
1998-01-01	55.9316092609510
1998-04-01	54.6449671087266
1998-07-01	55.2480386084226
1998-10-01	55.1587045132959
1999-01-01	54.8512756551518
1999-04-01	54.6291991028527
1999-07-01	56.3552849857483
1999-10-01	55.2984297528759
2000-01-01	53.9067929533276
2000-04-01	53.5733378712124
2000-07-01	52.1711438831921
2000-10-01	51.2453310797137
2001-01-01	49.4650160249563
2001-04-01	49.3902716893522
2001-07-01	48.0301347364542
2001-10-01	47.8403090797011
2002-01-01	48.4382483141613
2002-04-01	47.3617382458713
2002-07-01	45.8292331408936
2002-10-01	46.4499404659498
2003-01-01	46.6664331354875
2003-04-01	44.4966829635883
2003-07-01	42.7799553909395
2003-10-01	44.8484463966608
2004-01-01	44.7920435463364
2004-04-01	42.9568587603538
2004-07-01	45.0363824657465
2004-10-01	44.9335003555915
2005-01-01	43.5999231768165
2005-04-01	43.7166364914498
2005-07-01	43.0457813302998
2005-10-01	42.0770953255028
2006-01-01	41.7230411387789
2006-04-01	41.1385670581807
2006-07-01	41.3018668322037
2006-10-01	40.4531827308890
2007-01-01	41.3461994110595
2007-04-01	41.0796874838366
2007-07-01	40.1939655501844
2007-10-01	40.9230871021090
2008-01-01	40.2819607767761
2008-04-01	38.9453498320036
2008-07-01	39.1001175076873
2008-10-01	39.3255045519624
2009-01-01	41.0931490122508
2009-04-01	40.8201228276602
2009-07-01	41.0853406064190
2009-10-01	42.0959643101743
2010-01-01	40.1769218468912
2010-04-01	40.0099574095761
2010-07-01	40.0100632854554
2010-10-01	39.5668683016838
2011-01-01	39.1903751855061
2011-04-01	38.3468431385397
2011-07-01	39.1920653866857
2011-10-01	37.7562689300886
2012-01-01	39.0852240933707
2012-04-01	37.4923854735666
2012-07-01	38.8065306937511
2012-10-01	38.1617638434768
2013-01-01	38.2327249754849
2013-04-01	37.9770439282807
2013-07-01	38.4103514936576
2013-10-01	39.4360337657274
2014-01-01	38.1854104753722
2014-04-01	39.0263988549761
2014-07-01	38.2466219804939
2014-10-01	36.8342601201226
2015-01-01	37.6291401565110
2015-04-01	37.8333344462952
2015-07-01	36.2925193506072
2015-10-01	35.4990292910998
2016-01-01	36.6013691593418
2016-04-01	34.6924853302182
2016-07-01	33.6006472843426
2016-10-01	34.5671167287289
2017-01-01	34.6574838526642
2017-04-01	32.2838529438103
2017-07-01	32.4167643739800
2017-10-01	30.5880336556409
2018-01-01	30.5433945169234
2018-04-01	30.2442456791218