Quarter	Percent, Seasonally Adjusted
1999-01-01	41.5992718313054
1999-04-01	41.3849920407075
1999-07-01	40.4185754676011
1999-10-01	40.9221549300207
2000-01-01	40.7240417260407
2000-04-01	41.1416435092832
2000-07-01	40.7859040206900
2000-10-01	41.2028877233704
2001-01-01	41.5193063870275
2001-04-01	43.0537107388990
2001-07-01	43.2627412864471
2001-10-01	44.7717653189282
2002-01-01	45.9290362000656
2002-04-01	45.8006824302166
2002-07-01	46.0304625100185
2002-10-01	47.3344729036672
2003-01-01	46.3936204126352
2003-04-01	47.7684389799091
2003-07-01	48.9626654586617
2003-10-01	49.2704223523455
2004-01-01	50.5108058981481
2004-04-01	51.4349266417435
2004-07-01	52.4117209805239
2004-10-01	53.2842321192683
2005-01-01	54.0195385211301
2005-04-01	54.5463751973009
2005-07-01	55.4279499051150
2005-10-01	56.2814803580960
2006-01-01	56.0009977684996
2006-04-01	54.8437174224055
2006-07-01	54.9133426495068
2006-10-01	55.1037105909900
2007-01-01	55.7084468548906
2007-04-01	56.4607415470818
2007-07-01	57.9794103417056
2007-10-01	57.7696982799692
2008-01-01	58.8883963013314
2008-04-01	59.7214748376687
2008-07-01	60.4194753448974
2008-10-01	60.5063478608725
2009-01-01	59.0173199179769
2009-04-01	58.0763224760480
2009-07-01	58.5461842680204
2009-10-01	59.0839842822254
2010-01-01	60.0188597488202
2010-04-01	60.2188522161678
2010-07-01	59.3518944227675
2010-10-01	59.3143627630204
2011-01-01	58.3623512426342
2011-04-01	58.6658993337524
2011-07-01	58.9215230306043
2011-10-01	59.1160735821151
2012-01-01	58.9824990210263
2012-04-01	60.2625025848106
2012-07-01	59.9361748502826
2012-10-01	61.8429766889609
2013-01-01	59.9810762131436
2013-04-01	60.1213446959636
2013-07-01	59.6712821173484
2013-10-01	58.3953228192910
2014-01-01	58.5725434136917
2014-04-01	58.8538066449870
2014-07-01	59.0558381680030
2014-10-01	59.0068709880602
2015-01-01	58.3574476836196
2015-04-01	57.7906775931405
2015-07-01	58.2975742118416
2015-10-01	59.1507197342452
2016-01-01	59.3490304594638
2016-04-01	61.5532632545717
2016-07-01	59.5059784872601
2016-10-01	60.1117772065160
2017-01-01	59.4379997386983
2017-04-01	59.9438151837204
2017-07-01	60.2040351306081
2017-10-01	60.4789116332362
2018-01-01	60.9732891481371
2018-04-01	60.5244675617133