Quarter	Percent
1999-04-01	38.6961803212309
2000-01-01	37.6895209982557
2000-04-01	39.2122597123269
2000-07-01	39.0763052208835
2000-10-01	38.7541862022773
2001-01-01	38.0971714711057
2001-04-01	38.3407768304236
2001-07-01	40.5967328203051
2001-10-01	39.7186147186147
2002-01-01	38.3739837398374
2002-04-01	39.5771211710491
2002-07-01	39.8072747014115
2002-10-01	40.7417470452384
2003-01-01	40.3007518796992
2003-04-01	39.9753997539975
2003-07-01	41.0585186195608
2003-10-01	41.3001912045889
2004-01-01	41.6575041231446
2004-04-01	41.5923129718600
2004-07-01	40.9921671018277
2004-10-01	41.0527762506872
2005-01-01	42.4551724137931
2005-04-01	43.5989504212125
2005-07-01	42.4534803583735
2005-10-01	43.2015429122469
2006-01-01	44.1608876560333
2006-04-01	45.1702571230021
2006-07-01	44.4998614574674
2006-10-01	44.7288323187604
2007-01-01	44.4273957316223
2007-04-01	45.5078125000000
2007-07-01	45.3810784450327
2007-10-01	44.6378830083565
2008-01-01	44.4630872483221
2008-04-01	44.6446027091188
2008-07-01	45.4913456169738
2008-10-01	45.1662475551830
2009-01-01	43.5355091749545
2009-04-01	42.3605270535464
2009-07-01	41.9119708438464
2009-10-01	41.7693169092945
2010-01-01	41.0947368421053
2010-04-01	41.1235955056180
2010-07-01	40.1660101294316
2010-10-01	40.8777605851737
2011-01-01	40.9732016925247
2011-04-01	42.2816901408451
2011-07-01	43.4911242603550
2011-10-01	42.6657263751763
2012-01-01	43.0594900849858
2012-04-01	43.9411098527746
2012-07-01	43.4801076030016
2012-10-01	42.5357294467242
2013-01-01	42.8348023883992
2013-04-01	44.4333854685056
2013-07-01	43.8007117437722
2013-10-01	43.3712660028450
2014-01-01	42.0474014848658
2014-04-01	43.8115631691649
2014-07-01	44.4428571428571