Quarter	Percent
1999-07-01	5.18889294262063
1999-10-01	4.16596934273089
2000-01-01	4.55967110882148
2000-04-01	3.47941760540979
2000-07-01	3.34105381896813
2000-10-01	3.35874596671559
2001-01-01	4.31134727230985
2001-04-01	3.13680346389299
2001-07-01	2.92658524245447
2001-10-01	2.81074795408940
2002-01-01	3.19681402006442
2002-04-01	2.63876581190784
2002-07-01	2.45493727625694
2002-10-01	2.47707268021757
2003-01-01	2.97534909890616
2003-04-01	2.81275757494019
2003-07-01	2.84183429111985
2003-10-01	2.83621044902098
2004-01-01	3.14037452892766
2004-04-01	2.79419177247808
2004-07-01	2.95066230334001
2004-10-01	2.93694382035495
2005-01-01	3.41552969125376
2005-04-01	3.08505183627285
2005-07-01	3.08504795292698
2005-10-01	2.92992508574012
2006-01-01	3.24818043004505
2006-04-01	2.89836591556132
2006-07-01	2.82326892624684
2006-10-01	2.75877254575168
2007-01-01	3.12651925805686
2007-04-01	2.83230411277786
2007-07-01	2.70881551807882
2007-10-01	2.67197744175758
2008-01-01	2.92854370950816
2008-04-01	2.68781567187079
2008-07-01	2.65393793773670
2008-10-01	2.73304170430021
2009-01-01	3.36677668123712
2009-04-01	3.43901886016519
2009-07-01	3.18868222499558
2009-10-01	2.96692969731090
2010-01-01	4.14839554346689
2010-04-01	3.05277713599777
2010-07-01	3.14918034071666
2010-10-01	2.93756372580313
2011-01-01	3.70192046645789
2011-04-01	3.01789411348092
2011-07-01	2.71961338966173
2011-10-01	2.54894704970413
2012-01-01	3.34870754547403
2012-04-01	2.82548563529407
2012-07-01	2.61948565295915
2012-10-01	2.48366958407992
2013-01-01	3.13674062187294
2013-04-01	2.68114195010929
2013-07-01	2.52983339068822
2013-10-01	2.39551035252911
2014-01-01	3.37094985697358
2014-04-01	3.17126816288752
2014-07-01	2.84943396681938
2014-10-01	2.77404340503505
2015-01-01	3.46444563976247
2015-04-01	3.26261401196587
2015-07-01	2.95485357333330
2015-10-01	2.68520877584269
2016-01-01	3.65163026805477
2016-04-01	3.18568576932214
2016-07-01	3.05617545948008
2016-10-01	2.82464929875192
2017-01-01	3.73475574427450
2017-04-01	3.31295546355734
2017-07-01	3.03397121331601
2017-10-01	2.83111895998102
2018-01-01	3.80090176554726
2018-04-01	3.51030750400693
2018-07-01	3.35457330153294