Quarter	Percent
1999-07-01	6.29816538560498
1999-10-01	5.18217885065887
2000-01-01	5.69578663884688
2000-04-01	4.33671983621838
2000-07-01	4.20837865070001
2000-10-01	4.17371007789170
2001-01-01	5.39747218432105
2001-04-01	3.96170527244940
2001-07-01	3.69672830939369
2001-10-01	3.64217963384070
2002-01-01	4.14832849425857
2002-04-01	3.30028687041904
2002-07-01	3.13187701887743
2002-10-01	3.08091182002181
2003-01-01	3.93004581405226
2003-04-01	3.58926352015886
2003-07-01	3.63761856887660
2003-10-01	3.74555589096394
2004-01-01	4.19513703452056
2004-04-01	3.67376020122192
2004-07-01	3.70881007667840
2004-10-01	3.72846211174542
2005-01-01	4.38352781887952
2005-04-01	3.84063854555020
2005-07-01	3.80395152681068
2005-10-01	3.64029632675056
2006-01-01	4.08373896064626
2006-04-01	3.54676326479951
2006-07-01	3.52092897200553
2006-10-01	3.44981969675162
2007-01-01	3.76331541981433
2007-04-01	3.42002427269917
2007-07-01	3.30803656998330
2007-10-01	3.17272248633922
2008-01-01	3.50104378222371
2008-04-01	3.28063765421968
2008-07-01	3.22814494303953
2008-10-01	3.27411148005384
2009-01-01	3.97859808505710
2009-04-01	4.00030657078981
2009-07-01	3.75897003827734
2009-10-01	3.49350557904540
2010-01-01	4.54450212517278
2010-04-01	3.61125619453739
2010-07-01	3.63720046011429
2010-10-01	3.38807233074603
2011-01-01	4.12319914606503
2011-04-01	3.52366188707814
2011-07-01	3.23636557505129
2011-10-01	3.04444457903115
2012-01-01	3.69681305204314
2012-04-01	3.39222621725112
2012-07-01	3.11529055796057
2012-10-01	2.94526198929297
2013-01-01	3.58009240938474
2013-04-01	3.25430619602418
2013-07-01	3.12878854460353
2013-10-01	2.92151399076067
2014-01-01	3.84603497694577
2014-04-01	3.82341607702509
2014-07-01	3.45004380778196
2014-10-01	3.33372989478383
2015-01-01	4.01109174788014
2015-04-01	3.96890984900514
2015-07-01	3.55937993976433
2015-10-01	3.23158486801604
2016-01-01	4.22948769016531
2016-04-01	3.91482067719763
2016-07-01	3.71148019139387
2016-10-01	3.33612871665044
2017-01-01	4.11462968226028
2017-04-01	3.99975345288389
2017-07-01	3.60434797230539
2017-10-01	3.33940751071710
2018-01-01	4.06414395591640
2018-04-01	4.12403073806143
2018-07-01	4.00864390978698