Quarter	Percent, Seasonally Adjusted
1998-01-01	56.5879255063379
1998-04-01	56.4261611736761
1998-07-01	56.5116155019532
1998-10-01	56.6691858795706
1999-01-01	56.9029120103988
1999-04-01	56.8133643478759
1999-07-01	56.7147219890494
1999-10-01	56.6288185651658
2000-01-01	56.9746486747878
2000-04-01	57.1076091090196
2000-07-01	57.2532607704630
2000-10-01	57.6663603966534
2001-01-01	57.6720871801106
2001-04-01	58.0554940014870
2001-07-01	57.6841856119508
2001-10-01	57.3054298499402
2002-01-01	57.4626252065490
2002-04-01	56.9672546642919
2002-07-01	56.8204737373200
2002-10-01	56.9421428454686
2003-01-01	56.1037461639100
2003-04-01	55.5768927071625
2003-07-01	55.5562880314803
2003-10-01	55.1941773167165
2004-01-01	56.5221504063812
2004-04-01	56.1971893908687
2004-07-01	55.8829143625001
2004-10-01	55.6352452745156
2005-01-01	55.7361413010219
2005-04-01	55.8165294648723
2005-07-01	55.8731976163589
2005-10-01	55.3980710665624
2006-01-01	55.5600281330570
2006-04-01	55.1534902477227
2006-07-01	54.7994652153469
2006-10-01	54.6105884168184
2007-01-01	53.9651435655315
2007-04-01	53.9073942793173
2007-07-01	53.5903864831886
2007-10-01	53.6819172319256
2008-01-01	53.5573474544838
2008-04-01	53.4360683160389
2008-07-01	53.0037045081104
2008-10-01	52.6389752231820
2009-01-01	52.3216506093588
2009-04-01	51.5111721995193
2009-07-01	51.3737968726961
2009-10-01	51.1341623414531
2010-01-01	50.6671588157232
2010-04-01	50.6640093298426
2010-07-01	50.4477687032887
2010-10-01	50.1561790112963
2011-01-01	50.1216806904873
2011-04-01	50.0415778790130
2011-07-01	49.3842085303708
2011-10-01	48.3354323883130
2012-01-01	47.5197665024506
2012-04-01	46.4192897892758
2012-07-01	46.2301922693837
2012-10-01	45.5100337561881
2013-01-01	44.7330482168466
2013-04-01	44.2774605127306
2013-07-01	43.0420241070426
2013-10-01	41.5527044699685
2014-01-01	41.1275889951673
2014-04-01	40.2529434938963
2014-07-01	39.2203311866921
2014-10-01	38.4653929039749
2015-01-01	37.7702642579170
2015-04-01	36.7399916794786
2015-07-01	36.2710579311739
2015-10-01	36.0063028636530
2016-01-01	34.7039078295488
2016-04-01	34.2910756923415
2016-07-01	33.9028759926073
2016-10-01	33.5568554349120
2017-01-01	33.3738600479864
2017-04-01	33.1642248936579
2017-07-01	32.7972131521365
2017-10-01	32.4923024530428
2018-01-01	31.9650303917946
2018-04-01	31.3531485844025