Quarter	Percent, Seasonally Adjusted
1999-01-01	30.4968098008057
1999-04-01	31.5721047404827
1999-07-01	32.8914987630099
1999-10-01	33.6501452595165
2000-01-01	33.7791968138631
2000-04-01	34.0306751769256
2000-07-01	33.3298082789533
2000-10-01	33.9784841140999
2001-01-01	35.3037002963033
2001-04-01	35.1962993070238
2001-07-01	36.2489929533127
2001-10-01	36.1011279761159
2002-01-01	35.5411101724972
2002-04-01	37.0244704461685
2002-07-01	34.3749023027532
2002-10-01	35.0391533532335
2003-01-01	32.3594229597006
2003-04-01	31.5751716630075
2003-07-01	32.4175925942895
2003-10-01	30.4202377116163
2004-01-01	31.3098129695509
2004-04-01	31.4163991824434
2004-07-01	30.6722172574607
2004-10-01	30.7143136448359
2005-01-01	30.6141267355031
2005-04-01	27.6580850139023
2005-07-01	28.6285408457260
2005-10-01	28.1688218232214
2006-01-01	29.4726119709240
2006-04-01	27.8759702081414
2006-07-01	27.0602751219726
2006-10-01	23.3660647533223
2007-01-01	19.9881503014968
2007-04-01	18.8192498286345
2007-07-01	20.9195384369127
2007-10-01	21.1573886533235
2008-01-01	20.0978139122408
2008-04-01	19.7257978868126
2008-07-01	19.6138809488565
2008-10-01	19.7423619504842
2009-01-01	23.7721501393289
2009-04-01	24.8621284801629
2009-07-01	27.7417250354513
2009-10-01	29.4518513794500
2010-01-01	31.7002499286650
2010-04-01	32.1593167476031
2010-07-01	31.2343841392616
2010-10-01	32.7084207294264
2011-01-01	33.4716407351085
2011-04-01	33.5272302640866
2011-07-01	33.2663000528957
2011-10-01	35.0406183160752
2012-01-01	32.4637486703205
2012-04-01	31.7859719535200
2012-07-01	32.4878184250236
2012-10-01	33.1874571402695
2013-01-01	29.1210389379538
2013-04-01	31.9823758235712
2013-07-01	32.6260291125791
2013-10-01	32.8648755967300
2014-01-01	33.6345182534426
2014-04-01	33.8423543381295
2014-07-01	28.4186303601959
2014-10-01	24.4813251460293
2015-01-01	27.3149988508635
2015-04-01	28.0267923889472
2015-07-01	27.0339475207972
2015-10-01	27.6928104795886
2016-01-01	28.6031972262998
2016-04-01	27.9818187425071
2016-07-01	24.9533375360669
2016-10-01	23.9869601891701
2017-01-01	22.0303017144222
2017-04-01	19.7831119544653
2017-07-01	18.2936971098161
2017-10-01	20.5499716428554
2018-01-01	18.0369975818912
2018-04-01	18.2774886478474