Quarter	Percent, Seasonally Adjusted
1998-01-01	37.6904882185169
1998-04-01	32.0688649945357
1998-07-01	37.6080307329637
1998-10-01	39.9221841272116
1999-01-01	39.8735445646655
1999-04-01	43.9871945206125
1999-07-01	42.4773360623257
1999-10-01	40.9957417842846
2000-01-01	41.1674089524549
2000-04-01	43.1577020832730
2000-07-01	42.4971782764675
2000-10-01	42.2238631945540
2001-01-01	42.8979735165660
2001-04-01	43.5695330266691
2001-07-01	42.4977209336308
2001-10-01	42.5850303168129
2002-01-01	40.7947008330237
2002-04-01	41.3451274946556
2002-07-01	40.7794154341833
2002-10-01	41.3223845064031
2003-01-01	40.5927679441286
2003-04-01	40.7058632733147
2003-07-01	40.6251494184448
2003-10-01	38.5170326250586
2004-01-01	39.0828796397614
2004-04-01	39.6281577319501
2004-07-01	39.7897569455682
2004-10-01	39.1412972147840
2005-01-01	40.0900806921494
2005-04-01	39.6904186735920
2005-07-01	39.3552816671749
2005-10-01	42.4572455762876
2006-01-01	42.5004648798386
2006-04-01	40.7023901806686
2006-07-01	43.5306792848680
2006-10-01	43.5815617085781
2007-01-01	42.9325208629469
2007-04-01	44.9788787937831
2007-07-01	45.3392183444721
2007-10-01	44.7539225373447
2008-01-01	44.9767439670264
2008-04-01	45.6719705764032
2008-07-01	43.3191906346494
2008-10-01	43.1913251404091
2009-01-01	40.6266147574942
2009-04-01	38.7739974841435
2009-07-01	35.6865501038138
2009-10-01	35.8161031774460
2010-01-01	37.2244114722829
2010-04-01	37.7750683328932
2010-07-01	38.2952383301073
2010-10-01	37.3816379639258
2011-01-01	39.8123720342046
2011-04-01	40.1450687533586
2011-07-01	38.9228032870494
2011-10-01	39.2113895607168
2012-01-01	40.8804076760978
2012-04-01	41.2114214214713
2012-07-01	41.2843260085647
2012-10-01	40.4900259435325
2013-01-01	37.6989794222081
2013-04-01	39.0633148525985
2013-07-01	39.8101447728723
2013-10-01	39.8801583142559
2014-01-01	39.8441581066766
2014-04-01	39.9180283121355
2014-07-01	38.6625589236918
2014-10-01	40.6661402736041
2015-01-01	38.7811329998399
2015-04-01	38.4178282268586
2015-07-01	37.5898646945234
2015-10-01	37.7648487705822
2016-01-01	39.4803761699423
2016-04-01	40.4557592161481
2016-07-01	39.5762420261736
2016-10-01	40.8182666752823
2017-01-01	40.7801853232585
2017-04-01	40.4132841152985
2017-07-01	41.9678576425003
2017-10-01	42.2803546637900
2018-01-01	42.6618214771016
2018-04-01	42.9117809737427