Quarter	Percent
1999-04-01	3.24714371617559
2000-01-01	3.52575181472520
2000-04-01	3.45985463510010
2000-07-01	3.43990804206224
2000-10-01	2.89848812095032
2001-01-01	3.42886606797577
2001-04-01	3.73895021782346
2001-07-01	3.64954221770092
2001-10-01	3.22222222222222
2002-01-01	3.89428583548976
2002-04-01	4.02209852257984
2002-07-01	3.74594890357338
2002-10-01	3.37843624218549
2003-01-01	3.88789199350594
2003-04-01	4.22040850847888
2003-07-01	4.30488731324386
2003-10-01	3.76203723518083
2004-01-01	4.11965811965812
2004-04-01	4.25827647207480
2004-07-01	4.47430102126235
2004-10-01	3.88382446470214
2005-01-01	4.39086294416244
2005-04-01	4.63706305402241
2005-07-01	4.59035444509006
2005-10-01	3.90552898733115
2006-01-01	3.85766544728966
2006-04-01	3.93136492075843
2006-07-01	3.33455478197142
2006-10-01	2.47601869312126
2007-01-01	2.67613103251336
2007-04-01	2.70692974013474
2007-07-01	2.46368159203980
2007-10-01	2.13582248941977
2008-01-01	2.48912233938301
2008-04-01	2.71854394015347
2008-07-01	2.48045295227824
2008-10-01	2.51047648610896
2009-01-01	3.04584304584305
2009-04-01	3.30079926221949
2009-07-01	3.18414520632951
2009-10-01	2.87921348314607
2010-01-01	3.61544143373634
2010-04-01	3.83332694445509
2010-07-01	3.42143792864298
2010-10-01	3.21398256038275
2011-01-01	3.21882607519610
2011-04-01	3.51546116597400
2011-07-01	3.12322113012789
2011-10-01	3.00003797516424
2012-01-01	3.15817309508519
2012-04-01	3.22220152728627
2012-07-01	2.98819662333782
2012-10-01	3.12417957469152
2013-01-01	3.54575408117418
2013-04-01	3.57010591808014
2013-07-01	3.40208848381978
2013-10-01	3.17360157380944
2014-01-01	3.54646840148699
2014-04-01	3.31645755374569
2014-07-01	3.62520099400672
2014-10-01	3.44991585571084
2015-01-01	4.23173987783914
2015-04-01	4.33716696109889
2015-07-01	4.44828330814079
2015-10-01	4.16439550855772
2016-01-01	4.80080977514280
2016-04-01	4.79095963607481
2016-07-01	4.82743790990216
2016-10-01	4.28888969864811
2017-01-01	4.48946869761679
2017-04-01	4.37479712915209
2017-07-01	4.05546928604962
2017-10-01	3.72889988358556
2018-01-01	3.89732806438748
2018-04-01	3.82400286174209