Quarter	Percent, Seasonally Adjusted
1999-01-01	31.2872458422766
1999-04-01	32.1293237171340
1999-07-01	30.5643363492876
1999-10-01	30.2813257932601
2000-01-01	31.0859771394223
2000-04-01	30.8966387996832
2000-07-01	34.5621103277435
2000-10-01	32.8812193577219
2001-01-01	35.7098716475224
2001-04-01	32.9767233405319
2001-07-01	36.6500274700049
2001-10-01	38.1152550847331
2002-01-01	37.1765883041353
2002-04-01	37.2312255496913
2002-07-01	33.9607703524380
2002-10-01	33.1889556982022
2003-01-01	32.5475478841314
2003-04-01	31.5367750463135
2003-07-01	31.3469679831488
2003-10-01	37.2977795003183
2004-01-01	38.2342815705768
2004-04-01	40.9884318140479
2004-07-01	41.5327661241199
2004-10-01	42.8624581987708
2005-01-01	42.0466920149897
2005-04-01	42.2204709070241
2005-07-01	44.3665657925165
2005-10-01	43.9038819739057
2006-01-01	46.1583802801174
2006-04-01	44.8745771036624
2006-07-01	43.2642573616611
2006-10-01	43.8280177822176
2007-01-01	42.0487842621226
2007-04-01	46.2169812062583
2007-07-01	46.6199400162134
2007-10-01	46.0769496236112
2008-01-01	44.0218867664783
2008-04-01	45.6640155830181
2008-07-01	44.8949915248830
2008-10-01	44.2515561181133
2009-01-01	43.9364075175602
2009-04-01	47.3437040216294
2009-07-01	47.1982190456606
2009-10-01	47.0231452444839
2010-01-01	48.2765153013402
2010-04-01	44.4761709543142
2010-07-01	46.7673981419845
2010-10-01	42.7850756184949
2011-01-01	39.9583661484149
2011-04-01	38.8800540506136
2011-07-01	39.6131422100354
2011-10-01	39.5128034183748
2012-01-01	39.5829541521886
2012-04-01	39.3287814931000
2012-07-01	40.8460295125586
2012-10-01	43.2025998482179
2013-01-01	40.7920157227191
2013-04-01	41.6617494496038
2013-07-01	42.5427755501056
2013-10-01	42.1875938155923
2014-01-01	39.7786904599606
2014-04-01	42.5226222352918
2014-07-01	42.0707419411206
2014-10-01	42.7025580573836
2015-01-01	41.9335551142935
2015-04-01	44.0014982387722
2015-07-01	42.3065085671749
2015-10-01	42.1636560227699
2016-01-01	42.6811788082185
2016-04-01	44.5076097026595
2016-07-01	43.4957545122390
2016-10-01	43.6124971203460
2017-01-01	45.8496675086477
2017-04-01	48.5310165872988
2017-07-01	48.3270404608867
2017-10-01	49.4129462649605
2018-01-01	49.3979567692747
2018-04-01	51.6084224437053