Quarter	Percent
1999-01-01	7.75800143666693
1999-04-01	7.47220996027128
1999-07-01	6.96610439210694
1999-10-01	6.50429339539363
2000-01-01	6.37569192784039
2000-04-01	5.30444824977102
2000-07-01	5.73062512324985
2000-10-01	5.60462502007387
2001-01-01	5.56002574831027
2001-04-01	5.63044882144010
2001-07-01	5.81790855877235
2001-10-01	6.74008279409992
2002-01-01	6.30739003167729
2002-04-01	6.24170520812387
2002-07-01	6.38365403689744
2002-10-01	7.72887533177514
2003-01-01	7.63071697197622
2003-04-01	7.43957099407716
2003-07-01	7.55989211486594
2003-10-01	7.96066863323500
2004-01-01	7.87866850502265
2004-04-01	6.64862929216568
2004-07-01	7.87916295981124
2004-10-01	7.58463413675146
2005-01-01	7.77139753239699
2005-04-01	7.35600550422646
2005-07-01	7.53253733635352
2005-10-01	7.72594752186589
2006-01-01	8.14514873072730
2006-04-01	7.76364703580513
2006-07-01	6.71621463870190
2006-10-01	6.97030604118472
2007-01-01	7.04755388299692
2007-04-01	6.69769946910826
2007-07-01	6.58527279664250
2007-10-01	6.31342030975814
2008-01-01	6.64921863146715
2008-04-01	6.01951444376152
2008-07-01	7.16116387758179
2008-10-01	6.02881362375033
2009-01-01	7.57518226002430
2009-04-01	7.53158966086723
2009-07-01	7.73845686512758
2009-10-01	8.12861543084667
2010-01-01	8.34744646419028
2010-04-01	8.04274465691788
2010-07-01	8.35937500000000
2010-10-01	7.67942227516379
2011-01-01	7.38768212424392
2011-04-01	6.48870791388606
2011-07-01	7.55589238347859
2011-10-01	6.99738903394256
2012-01-01	7.19199969923681
2012-04-01	6.82678256959796
2012-07-01	7.66437022614947
2012-10-01	8.91126025354213
2013-01-01	8.77673545966229
2013-04-01	8.15014593416337
2013-07-01	8.84198729921554
2013-10-01	8.79686625629547
2014-01-01	9.25801389822910
2014-04-01	8.97272591038514
2014-07-01	8.98897472436811
2014-10-01	8.85845765605285
2015-01-01	9.33407738095238
2015-04-01	9.29447507595364
2015-07-01	8.50841121495327
2015-10-01	9.23616814753976
2016-01-01	8.79038317054846
2016-04-01	7.84628599170930
2016-07-01	7.89365748163615
2016-10-01	7.71761227129920
2017-01-01	7.51076980707998
2017-04-01	6.98145025295110
2017-07-01	7.49453562034602
2017-10-01	6.47208590088927
2018-01-01	6.47893602793670
2018-04-01	6.26512303167926