Quarter	Percent
1998-04-01	7.32125834127741
1999-01-01	7.33583119700256
1999-04-01	7.19118499903344
1999-07-01	7.08782742681048
1999-10-01	7.14563106796116
2000-01-01	6.94037145650049
2000-04-01	6.80100755667506
2000-07-01	6.02636534839925
2000-10-01	6.08146873207114
2001-01-01	6.00801068090788
2001-04-01	5.40437678401522
2001-07-01	4.91986582184122
2001-10-01	6.27012691797689
2002-01-01	6.31873252562908
2002-04-01	5.63007746079728
2002-07-01	5.70167018621616
2002-10-01	5.92923794712286
2003-01-01	6.82521268368136
2003-04-01	6.02850539291217
2003-07-01	6.22844001533155
2003-10-01	6.23478749297884
2004-01-01	6.49181547619048
2004-04-01	5.68056067871634
2004-07-01	5.49549549549550
2004-10-01	5.75196922513281
2005-01-01	6.02876106194690
2005-04-01	5.42635658914729
2005-07-01	6.13861386138614
2005-10-01	6.62585523946705
2006-01-01	5.40095203222263
2006-04-01	5.09832483612527
2006-07-01	4.60325989611320
2006-10-01	4.46591323368575
2007-01-01	4.74459189238320
2007-04-01	3.54092526690391
2007-07-01	3.66876310272537
2007-10-01	3.92609699769053
2008-01-01	4.71307789170714
2008-04-01	3.48650098337207
2008-07-01	3.85674931129477
2008-10-01	3.92295458561583
2009-01-01	5.49954170485793
2009-04-01	5.60398505603985
2009-07-01	6.22075896725004
2009-10-01	6.27080049045367
2010-01-01	7.35815602836880
2010-04-01	7.44756487735514
2010-07-01	6.99559471365639
2010-10-01	7.85764622973925
2011-01-01	8.59062840537595
2011-04-01	7.92151162790698
2011-07-01	7.91704238052299
2011-10-01	8.21793002915452
2012-01-01	8.36572274662225
2012-04-01	7.69942624467888
2012-07-01	8.40917364397524
2012-10-01	9.07444303568194
2013-01-01	10.63122923588040
2013-04-01	9.92673992673993
2013-07-01	8.29241680305510
2013-10-01	8.83806038426349
2014-01-01	10.06661732050330
2014-04-01	8.42124408875955
2014-07-01	8.35599057458764
2014-10-01	8.84489647657101
2015-01-01	8.93286480488256
2015-04-01	8.26642335766424
2015-07-01	7.20492396813903
2015-10-01	7.81977285421709
2016-01-01	8.40320121951219
2016-04-01	7.13344626388105
2016-07-01	6.62288930581614
2016-10-01	7.80460415496912
2017-01-01	7.45467998520163
2017-04-01	5.49771689497717
2017-07-01	5.07495033411595
2017-10-01	5.09124087591241
2018-01-01	5.41034545786876
2018-04-01	4.81044349070100