Quarter	Percent, Seasonally Adjusted
1998-01-01	42.7488198370114
1998-04-01	42.8602407521338
1998-07-01	43.2236668257245
1998-10-01	43.2350643293015
1999-01-01	44.1779422953526
1999-04-01	43.8499091449900
1999-07-01	43.5962179782624
1999-10-01	43.7190728811490
2000-01-01	43.6446179857546
2000-04-01	43.8191561676128
2000-07-01	44.0217004971539
2000-10-01	43.7731605124647
2001-01-01	43.6657978608733
2001-04-01	43.1220112256722
2001-07-01	43.0977111508666
2001-10-01	42.7880559491978
2002-01-01	43.5520283760725
2002-04-01	44.1237237734655
2002-07-01	44.5867138151694
2002-10-01	44.7074050740491
2003-01-01	44.8090259760295
2003-04-01	45.0043286890344
2003-07-01	45.3860556962904
2003-10-01	45.5585598907700
2004-01-01	46.4348140709464
2004-04-01	46.7216334120325
2004-07-01	46.8356058835812
2004-10-01	46.8770154923078
2005-01-01	46.6498458142071
2005-04-01	47.0152329737095
2005-07-01	47.2030193473017
2005-10-01	47.2701775268350
2006-01-01	47.3724455180481
2006-04-01	47.4359313319028
2006-07-01	47.8771448212786
2006-10-01	47.5655861087191
2007-01-01	47.5949057817998
2007-04-01	47.7070862091757
2007-07-01	47.6663769447817
2007-10-01	47.5867922625834
2008-01-01	47.6008333937482
2008-04-01	47.8270050560625
2008-07-01	47.9260737566381
2008-10-01	48.2726654222691
2009-01-01	48.8954065092246
2009-04-01	49.1941215963278
2009-07-01	49.6021882643492
2009-10-01	49.6173836812650
2010-01-01	49.9608080846767
2010-04-01	50.2559519988009
2010-07-01	50.3637093905882
2010-10-01	50.3029617434311
2011-01-01	50.1325316040054
2011-04-01	49.9347309326419
2011-07-01	49.9583303062932
2011-10-01	50.4352386188305
2012-01-01	50.3400284757859
2012-04-01	50.5649131414210
2012-07-01	50.7657390164436
2012-10-01	50.6869879633484
2013-01-01	50.2696170221212
2013-04-01	50.8263373815609
2013-07-01	50.7648148641891
2013-10-01	50.3417411678866
2014-01-01	50.8076620415878
2014-04-01	51.1833212072894
2014-07-01	51.2929110755992
2014-10-01	51.1761111088100
2015-01-01	51.3955544984766
2015-04-01	52.0009332070650
2015-07-01	52.2993040313987
2015-10-01	52.1890907258545
2016-01-01	52.2734831842218
2016-04-01	52.4205628921465
2016-07-01	52.6630366653208
2016-10-01	52.0048843644620
2017-01-01	52.0878483489421
2017-04-01	52.4262046636602
2017-07-01	51.9865166449217
2017-10-01	51.7180116311652
2018-01-01	51.4337570584045
2018-04-01	51.8207316060028