Quarter	Percent
1999-04-01	6.78001799835334
1999-07-01	6.73443296112255
1999-10-01	6.32985011410546
2000-01-01	6.34309144655288
2000-04-01	6.14429879053728
2000-07-01	5.98689717238211
2000-10-01	5.72851176221558
2001-01-01	5.75780982892454
2001-04-01	5.18190650977005
2001-07-01	5.71501906258412
2001-10-01	5.49594741369027
2002-01-01	5.66573489232012
2002-04-01	5.60547872642313
2002-07-01	5.81896148740035
2002-10-01	5.54300402686235
2003-01-01	5.63919877503828
2003-04-01	5.42759776466704
2003-07-01	5.66067952792766
2003-10-01	5.30658549739940
2004-01-01	5.16801321501096
2004-04-01	4.93606695081355
2004-07-01	5.19134427198090
2004-10-01	4.98384381949308
2005-01-01	5.04637945033585
2005-04-01	4.95085570345492
2005-07-01	5.18905872888174
2005-10-01	5.36388451507396
2006-01-01	5.60269475120454
2006-04-01	5.68167352654135
2006-07-01	5.93077676162277
2006-10-01	5.55565562500375
2007-01-01	5.81297946835885
2007-04-01	5.46895195955248
2007-07-01	5.64411200294682
2007-10-01	5.14731286560158
2008-01-01	5.47854706908147
2008-04-01	5.59907888801842
2008-07-01	6.42210464432687
2008-10-01	6.74548555967296
2009-01-01	7.80648740527397
2009-04-01	8.62868047982552
2009-07-01	9.03113881619571
2009-10-01	8.51148388933706
2010-01-01	9.08663628467058
2010-04-01	8.53512616988509
2010-07-01	8.40237652395473
2010-10-01	8.26623756582797
2011-01-01	8.36479762870955
2011-04-01	8.37971479793305
2011-07-01	9.06116651239689
2011-10-01	8.74411055516958
2012-01-01	8.72007630505638
2012-04-01	8.29098394017979
2012-07-01	8.31556994550000
2012-10-01	7.94381192120274
2013-01-01	8.27777195983291
2013-04-01	8.14235940009160
2013-07-01	8.05412149864353
2013-10-01	7.32334834144997
2014-01-01	6.99870596693027
2014-04-01	6.39391932744076
2014-07-01	6.30615735461802
2014-10-01	5.75659592033298
2015-01-01	5.64341706242490
2015-04-01	5.62510039699842
2015-07-01	5.57835683594966
2015-10-01	4.97955541499119
2016-01-01	5.08946074265447
2016-04-01	4.87326015616159
2016-07-01	5.03623778273049
2016-10-01	4.70719678587954
2017-01-01	4.73903931216423
2017-04-01	4.43932749775663
2017-07-01	4.41096183395152
2017-10-01	4.15743230320962
2018-01-01	4.20051838816141
2018-04-01	3.90457972319118