Quarter	Percent
1999-04-01	5.15044685654204
1999-07-01	5.61325004963423
1999-10-01	5.37941431769382
2000-01-01	5.13163425165259
2000-04-01	4.85951473586937
2000-07-01	5.06913829162968
2000-10-01	4.95696007376114
2001-01-01	4.28081279907491
2001-04-01	4.11303818652061
2001-07-01	4.55545343598861
2001-10-01	4.58624052817166
2002-01-01	4.22393816565144
2002-04-01	4.36134737157630
2002-07-01	4.73639632678534
2002-10-01	4.69669063038441
2003-01-01	4.19229705589978
2003-04-01	4.06370044381457
2003-07-01	4.59361345034861
2003-10-01	4.42586727553952
2004-01-01	4.03928844907816
2004-04-01	4.19017633168306
2004-07-01	4.38003810640481
2004-10-01	4.35666358251798
2005-01-01	4.11700347068754
2005-04-01	4.06377628882462
2005-07-01	4.27878665784096
2005-10-01	4.70602607033529
2006-01-01	4.62497773026902
2006-04-01	4.86964062322302
2006-07-01	5.28229421856357
2006-10-01	5.00208597025901
2007-01-01	5.04830231566984
2007-04-01	4.87074076440809
2007-07-01	5.20774845592364
2007-10-01	4.71637361406652
2008-01-01	4.66185114864818
2008-04-01	4.68613455071694
2008-07-01	5.52920403005228
2008-10-01	5.45738153835488
2009-01-01	6.05313631674064
2009-04-01	6.40942154485625
2009-07-01	6.75543049311966
2009-10-01	6.46030624909997
2010-01-01	6.59738254894799
2010-04-01	6.67693852704274
2010-07-01	7.25133006733572
2010-10-01	6.96911948525645
2011-01-01	6.93892818280740
2011-04-01	7.11175320117484
2011-07-01	7.73553808327254
2011-10-01	7.57119312655355
2012-01-01	7.48723919901434
2012-04-01	7.24351518757945
2012-07-01	7.59537649495557
2012-10-01	7.21949336421602
2013-01-01	7.18188914910226
2013-04-01	6.95969228303550
2013-07-01	7.39465930261750
2013-10-01	6.61934631891713
2014-01-01	6.29406173263275
2014-04-01	5.84942072226942
2014-07-01	5.91021955044433
2014-10-01	5.23632084722495
2015-01-01	5.19473732345602
2015-04-01	5.23510275538600
2015-07-01	5.33433460002201
2015-10-01	4.73737812749340
2016-01-01	4.86532489637878
2016-04-01	4.67077563849671
2016-07-01	4.82540537766831
2016-10-01	4.37644193796462
2017-01-01	4.28423828989841
2017-04-01	4.10806240873107
2017-07-01	4.33914514262460
2017-10-01	4.14876672864223
2018-01-01	4.09566460460233
2018-04-01	3.86037221394376