Quarter	Percent
1998-04-01	4.39421338155515
1999-04-01	3.62207718142070
2000-01-01	3.29360807190606
2000-04-01	2.72534871344233
2000-07-01	2.87030909135476
2000-10-01	2.89922159554641
2001-01-01	2.61391734369481
2001-04-01	2.11913778036703
2001-07-01	2.05998402362567
2001-10-01	2.21269833626273
2002-01-01	2.80607341918124
2002-04-01	2.55401813913023
2002-07-01	2.72745583583133
2002-10-01	2.93521907537046
2003-01-01	3.65075403757710
2003-04-01	3.59388718824897
2003-07-01	3.56234397737894
2003-10-01	3.92177790427399
2004-01-01	4.79610641213438
2004-04-01	4.64678326781385
2004-07-01	4.17626863565819
2004-10-01	4.61263506919540
2005-01-01	5.28209726515491
2005-04-01	4.80704924380199
2005-07-01	4.37179622526422
2005-10-01	4.43688808113971
2006-01-01	4.52988154956093
2006-04-01	3.87710826509903
2006-07-01	3.60600109237545
2006-10-01	3.61140955879804
2007-01-01	3.82111389726012
2007-04-01	3.19051647271314
2007-07-01	2.91289818542638
2007-10-01	2.79462317698519
2008-01-01	3.13005628859871
2008-04-01	2.80380184201285
2008-07-01	2.48315165769596
2008-10-01	2.58782530492946
2009-01-01	3.17289714394474
2009-04-01	3.25606505381786
2009-07-01	3.44722837888010
2009-10-01	3.77592007110791
2010-01-01	4.83070803136645
2010-04-01	4.48450961373880
2010-07-01	4.25425140002509
2010-10-01	4.23258680912266
2011-01-01	5.19353540001150
2011-04-01	4.74912149317357
2011-07-01	4.73713755456014
2011-10-01	5.22679756385783
2012-01-01	5.81725312145290
2012-04-01	5.65305891665724
2012-07-01	5.66615275542702
2012-10-01	6.14633050704700
2013-01-01	7.08824949201253
2013-04-01	7.09308057721610
2013-07-01	7.27603811736843
2013-10-01	7.51341681574240
2014-01-01	8.11142236772531
2014-04-01	7.52745086998142
2014-07-01	6.97049431025952
2014-10-01	7.05590925394548
2015-01-01	7.43762749097756
2015-04-01	6.87703441872952
2015-07-01	6.55455419639064
2015-10-01	6.61990453353652
2016-01-01	6.77774164975502
2016-04-01	6.21292538245395
2016-07-01	5.61737737024838
2016-10-01	5.42359681815653
2017-01-01	5.56061683405919
2017-04-01	4.99136174359883
2017-07-01	4.50066137566138
2017-10-01	4.30903275614867
2018-01-01	4.36842917281964
2018-04-01	3.87545072938701