Quarter	Percent
1999-04-01	3.23141706334676
2000-01-01	2.97872340425532
2000-04-01	3.27630141973062
2000-07-01	3.85450597176982
2000-10-01	2.68698060941828
2001-01-01	3.17095588235294
2001-04-01	3.61336946702800
2001-07-01	3.87184115523466
2001-10-01	3.12811678302657
2002-01-01	3.71667115539995
2002-04-01	4.09066761112095
2002-07-01	3.65908076751450
2002-10-01	2.91685597455702
2003-01-01	3.69297610427227
2003-04-01	3.95986382368751
2003-07-01	3.87493319080705
2003-10-01	3.31341662140141
2004-01-01	3.49428208386277
2004-04-01	3.92278953922790
2004-07-01	4.23172462739532
2004-10-01	3.34592552617377
2005-01-01	4.05781488463956
2005-04-01	4.52243447356730
2005-07-01	4.47000966013875
2005-10-01	3.71161548731642
2006-01-01	3.69455956264880
2006-04-01	3.85450125878983
2006-07-01	3.46137246439361
2006-10-01	2.36480612067466
2007-01-01	2.57625366189902
2007-04-01	2.65479219677693
2007-07-01	2.47474747474748
2007-10-01	1.98714202220923
2008-01-01	2.27347883597884
2008-04-01	2.51083667293694
2008-07-01	2.36091822563516
2008-10-01	2.30082698763613
2009-01-01	2.36226908615334
2009-04-01	2.87155291629383
2009-07-01	2.84942274625399
2009-10-01	2.33113673805601
2010-01-01	2.97795327410332
2010-04-01	3.04833319748961
2010-07-01	3.14337034617897
2010-10-01	2.58867862701728
2011-01-01	2.81770198944377
2011-04-01	3.22995339868231
2011-07-01	3.28118732450862
2011-10-01	2.62733720180529
2012-01-01	2.39511332583186
2012-04-01	2.51582278481013
2012-07-01	2.87707061900610
2012-10-01	2.74878495737391
2013-01-01	3.28362944162437
2013-04-01	3.08831639486331
2013-07-01	3.54493636292652
2013-10-01	3.01105622206540
2014-01-01	3.27533265097236
2014-04-01	2.88760896637609
2014-07-01	3.88906104741246
2014-10-01	2.89384091612504
2015-01-01	3.99657214085385
2015-04-01	3.81573896353167
2015-07-01	4.11063569682152
2015-10-01	4.07581477771785
2016-01-01	3.91087207068767
2016-04-01	3.59429232549171
2016-07-01	4.55305564001216
2016-10-01	3.58081979891725
2017-01-01	3.82407694694384
2017-04-01	3.97553516819572
2017-07-01	3.79524064580305
2017-10-01	3.16309211541429
2018-01-01	3.41452135039309
2018-04-01	3.43118566526878