Quarter	Percent
1999-07-01	5.96778046072557
1999-10-01	5.00393925221278
2000-01-01	5.30837840837190
2000-04-01	4.08804236717985
2000-07-01	3.89054581847789
2000-10-01	3.96737542175033
2001-01-01	5.11196960922622
2001-04-01	3.72656129332679
2001-07-01	3.41624140150959
2001-10-01	3.29338499625296
2002-01-01	3.68505273594137
2002-04-01	3.11060074101006
2002-07-01	2.91093506873012
2002-10-01	2.98911262817128
2003-01-01	3.34819525343640
2003-04-01	3.12596539556162
2003-07-01	3.18556905308987
2003-10-01	3.18057236276705
2004-01-01	3.44144993089210
2004-04-01	3.11085856854239
2004-07-01	3.33878189843957
2004-10-01	3.41769680349206
2005-01-01	3.82400312397416
2005-04-01	3.39369779160448
2005-07-01	3.47861816011125
2005-10-01	3.28796792067361
2006-01-01	3.70675602756122
2006-04-01	3.45062527057757
2006-07-01	3.30712326767498
2006-10-01	3.23698741423541
2007-01-01	3.68185300886127
2007-04-01	3.35624420360682
2007-07-01	3.10556991963224
2007-10-01	3.04859932653422
2008-01-01	3.39090863710313
2008-04-01	3.15005220466585
2008-07-01	3.09408411812212
2008-10-01	3.21365969786341
2009-01-01	3.93899254379819
2009-04-01	3.90844596996882
2009-07-01	3.79235014130044
2009-10-01	3.39917727259082
2010-01-01	4.44406903659950
2010-04-01	3.54505652001305
2010-07-01	3.45869927201054
2010-10-01	3.28878608917114
2011-01-01	3.86897529039607
2011-04-01	3.25913428521409
2011-07-01	3.00827762196030
2011-10-01	2.84943298494660
2012-01-01	3.56736573490874
2012-04-01	3.12181980223462
2012-07-01	2.89814929112918
2012-10-01	2.78088961604451
2013-01-01	3.45778806461379
2013-04-01	2.97277701639037
2013-07-01	2.86721262842716
2013-10-01	2.65300655458811
2014-01-01	3.43618722066873
2014-04-01	3.19518613912804
2014-07-01	2.98796562043938
2014-10-01	2.96865316667843
2015-01-01	3.51775876404124
2015-04-01	3.34865408220235
2015-07-01	3.19956252573794
2015-10-01	2.90033279712693
2016-01-01	3.85051685174771
2016-04-01	3.45068374144895
2016-07-01	3.34261034015713
2016-10-01	2.91001779562842
2017-01-01	3.80988304769664
2017-04-01	3.56203487801043
2017-07-01	3.31625295285320
2017-10-01	3.05181775104294
2018-01-01	3.83823944758518
2018-04-01	3.79921561347896
2018-07-01	3.59763196473858