Quarter	Percent
2005-01-01	94.0460974708826
2005-04-01	93.8493430180364
2005-07-01	93.8248944251929
2005-10-01	93.8313301858415
2006-01-01	94.3353803710512
2006-04-01	93.9476875108262
2006-07-01	94.0888114721874
2006-10-01	93.7772703671878
2007-01-01	94.2705267692980
2007-04-01	94.0268982533760
2007-07-01	93.6473112284168
2007-10-01	93.7997485115215
2008-01-01	94.2036924263336
2008-04-01	94.0072870806133
2008-07-01	93.7848600744288
2008-10-01	93.6338479730348
2009-01-01	93.8803940934753
2009-04-01	93.5923670222427
2009-07-01	93.5744352377851
2009-10-01	93.4279160907144
2010-01-01	92.0051509132545
2010-04-01	92.6715045902346
2010-07-01	92.6868404884188
2010-10-01	92.5992687747628
2011-01-01	92.8355372745696
2011-04-01	93.0413661339771
2011-07-01	93.0025983798338
2011-10-01	92.7196707272625
2012-01-01	92.4639406975186
2012-04-01	92.1305875778417
2012-07-01	92.7367114534499
2012-10-01	92.7065581078593
2013-01-01	92.4154421356386
2013-04-01	92.4124165735510
2013-07-01	92.2357496707935
2013-10-01	92.2531460322277
2014-01-01	92.0203677150935
2014-04-01	91.7425355802703
2014-07-01	91.1668238772588
2014-10-01	91.9287503853320
2015-01-01	91.6563945588550
2015-04-01	91.6912546210797
2015-07-01	91.7828391122334
2015-10-01	91.9824686367172
2016-01-01	91.6482710253113
2016-04-01	91.4335759914537
2016-07-01	91.4528928666256
2016-10-01	91.1719336457674
2017-01-01	90.9069148841684
2017-04-01	91.4283836597050
2017-07-01	91.3863670174574
2017-10-01	91.3543748525231
2018-01-01	91.0206785405784
2018-04-01	91.2956559930964
2018-07-01	91.0103807203966