Quarter	Percent
1999-07-01	7.04635530749306
1999-10-01	5.82580156737750
2000-01-01	6.21704934348623
2000-04-01	4.87149346839694
2000-07-01	4.70319394836552
2000-10-01	4.71853778528986
2001-01-01	6.06428509778522
2001-04-01	4.38115554933481
2001-07-01	4.08879936250798
2001-10-01	4.02715828308155
2002-01-01	4.45125574798075
2002-04-01	3.65796019702263
2002-07-01	3.50208129612318
2002-10-01	3.50560935589402
2003-01-01	4.05763748817098
2003-04-01	3.75967626377166
2003-07-01	3.84426966100808
2003-10-01	3.94358435753397
2004-01-01	4.22154034164981
2004-04-01	3.78163686616760
2004-07-01	3.99434623987776
2004-10-01	4.11309325363801
2005-01-01	4.59470205271839
2005-04-01	3.98182378495652
2005-07-01	4.11802367910569
2005-10-01	3.89664003111590
2006-01-01	4.43948428171009
2006-04-01	3.95579661730167
2006-07-01	3.82720615285387
2006-10-01	3.85315408210007
2007-01-01	4.26222177033036
2007-04-01	3.88573691826640
2007-07-01	3.70031411966057
2007-10-01	3.50493924820948
2008-01-01	3.88653232473167
2008-04-01	3.61447957982289
2008-07-01	3.62545523606109
2008-10-01	3.70153087367222
2009-01-01	4.49870817916672
2009-04-01	4.40854664833782
2009-07-01	4.25388375536915
2009-10-01	3.83797673585876
2010-01-01	4.76334041699362
2010-04-01	4.00146309564770
2010-07-01	3.85393894569243
2010-10-01	3.62476807848052
2011-01-01	4.25572904838404
2011-04-01	3.70498077097331
2011-07-01	3.48466667103802
2011-10-01	3.29653046926990
2012-01-01	3.79269841191969
2012-04-01	3.52504326715307
2012-07-01	3.30690096794457
2012-10-01	3.17373490326504
2013-01-01	3.80009212407606
2013-04-01	3.37261413590821
2013-07-01	3.38964134505693
2013-10-01	3.05925260341364
2014-01-01	3.85494591939783
2014-04-01	3.70948646963710
2014-07-01	3.53590973709115
2014-10-01	3.38857437608784
2015-01-01	3.97301867281099
2015-04-01	3.89926897314669
2015-07-01	3.68239391396971
2015-10-01	3.31823263291269
2016-01-01	4.31325959729108
2016-04-01	3.98830899881897
2016-07-01	3.85872732086415
2016-10-01	3.27064850838158
2017-01-01	4.08614692525399
2017-04-01	4.07702188639770
2017-07-01	3.78152317642814
2017-10-01	3.49091481397701
2018-01-01	4.06722691390846
2018-04-01	4.21241976743451
2018-07-01	4.10526034391776