Quarter	Percent
1999-07-01	24.5120106932648
1999-10-01	25.9162933043430
2000-01-01	30.8275085689408
2000-04-01	27.7797701838031
2000-07-01	27.7013750307877
2000-10-01	28.4059850290912
2001-01-01	32.2388710459524
2001-04-01	26.2664076713605
2001-07-01	26.3750771415325
2001-10-01	27.0512656913763
2002-01-01	29.3365704948098
2002-04-01	25.4363929052706
2002-07-01	24.5404167693808
2002-10-01	25.1408449326734
2003-01-01	29.7268379444188
2003-04-01	26.3049084396405
2003-07-01	26.8020335130193
2003-10-01	26.3269107321468
2004-01-01	28.2703597214458
2004-04-01	25.5140297906311
2004-07-01	25.8821820216582
2004-10-01	24.9825335009929
2005-01-01	27.9258355038828
2005-04-01	23.6366526019040
2005-07-01	24.8133596322549
2005-10-01	25.3730476847188
2006-01-01	27.4759587774465
2006-04-01	23.6416613779816
2006-07-01	24.8600814790572
2006-10-01	24.1238191463442
2007-01-01	25.5104043628667
2007-04-01	21.7313625543509
2007-07-01	22.2932461104865
2007-10-01	23.1071881412881
2008-01-01	25.4622586445992
2008-04-01	22.4603980713267
2008-07-01	23.2172978529811
2008-10-01	23.8501352677785
2009-01-01	26.1397416405928
2009-04-01	22.7001361555819
2009-07-01	22.7524700648825
2009-10-01	22.5056978552681
2010-01-01	24.7393898224363
2010-04-01	21.1616356870249
2010-07-01	21.6422288404821
2010-10-01	21.9890932187885
2011-01-01	23.3671303788112
2011-04-01	19.6294751204923
2011-07-01	21.0954551822872
2011-10-01	20.4029027475061
2012-01-01	22.9641623554175
2012-04-01	18.8625041712640
2012-07-01	19.7664884100800
2012-10-01	20.1741182807361
2013-01-01	22.7566089370142
2013-04-01	18.4511052204357
2013-07-01	18.4386961625345
2013-10-01	18.7619369553851
2014-01-01	19.9692204131326
2014-04-01	16.3873005474801
2014-07-01	17.6382647659958
2014-10-01	17.7450228884337
2015-01-01	19.1747378600460
2015-04-01	17.4311326850332
2015-07-01	17.7468885211387
2015-10-01	18.4424821709231
2016-01-01	20.2870895931182
2016-04-01	18.1707903777450
2016-07-01	17.4689371109531
2016-10-01	17.2144126493155
2017-01-01	18.4475783534774
2017-04-01	16.1847175419757
2017-07-01	17.0058641886008
2017-10-01	17.4108742228538
2018-01-01	19.0671439200752
2018-04-01	16.8309656789516
2018-07-01	17.5695118038679