Quarter	Percent, Seasonally Adjusted
1999-04-01	53.6023763231089
1999-07-01	53.1116697810314
1999-10-01	52.8300284390265
2000-01-01	52.5966230389728
2000-04-01	52.2664718942205
2000-07-01	52.1678192615573
2000-10-01	52.0367204485412
2001-01-01	51.8617298605338
2001-04-01	51.8311089419672
2001-07-01	51.2930944978218
2001-10-01	51.2494688304364
2002-01-01	50.8776684009239
2002-04-01	50.8304297076221
2002-07-01	50.9328251949923
2002-10-01	50.7670707584935
2003-01-01	50.6351631937508
2003-04-01	50.4451222887304
2003-07-01	50.2106410103754
2003-10-01	50.2326984349063
2004-01-01	50.1620879108547
2004-04-01	50.1247649708696
2004-07-01	49.8007448788609
2004-10-01	49.1097547327857
2005-01-01	48.7799125296448
2005-04-01	48.3045327878522
2005-07-01	47.9649971802087
2005-10-01	47.6896894281718
2006-01-01	47.3641150903940
2006-04-01	47.2120769130325
2006-07-01	46.7000489829965
2006-10-01	46.5931669126962
2007-01-01	43.3265784735522
2007-04-01	42.8496441651784
2007-07-01	42.9915252961056
2007-10-01	42.9350751463895
2008-01-01	42.9450926879283
2008-04-01	43.1859048516796
2008-07-01	43.0686383066327
2008-10-01	43.4764744508774
2009-01-01	43.5888285608178
2009-04-01	43.6886815953612
2009-07-01	43.9174632567715
2009-10-01	44.3691118810118
2010-01-01	44.6747030185420
2010-04-01	44.6113463071466
2010-07-01	44.9698945269320
2010-10-01	44.7440658444785
2011-01-01	45.0573437129879
2011-04-01	44.9670628006666
2011-07-01	45.1319434909715
2011-10-01	44.9844597581018
2012-01-01	44.9256329435853
2012-04-01	45.3729397231902
2012-07-01	45.3436843048844
2012-10-01	45.2910555211073
2013-01-01	44.9058178270148
2013-04-01	44.4627876865457
2013-07-01	44.7616852425723
2013-10-01	44.7577296974262
2014-01-01	44.8300431938875
2014-04-01	45.3210313157442
2014-07-01	44.9138426729024
2014-10-01	45.2047890923252
2015-01-01	45.2930873443089
2015-04-01	45.1638247605354
2015-07-01	45.2021591313287
2015-10-01	44.9287244603334
2016-01-01	44.8169870401644
2016-04-01	44.1514921324261
2016-07-01	44.2348520941885
2016-10-01	44.3824486957440
2017-01-01	44.0992695489414
2017-04-01	44.6576490611948
2017-07-01	44.4334688417784
2017-10-01	44.1741088103736
2018-01-01	44.2686773238640
2018-04-01	43.8635671539371