Quarter	Percent
2005-01-01	23.4407816637750
2005-04-01	24.9676421378287
2005-07-01	25.9028769638849
2005-10-01	20.9626868133681
2006-01-01	23.6387339316032
2006-04-01	23.1591669765712
2006-07-01	22.2193828659043
2006-10-01	17.3224568138196
2007-01-01	19.1607840931462
2007-04-01	19.6393731512367
2007-07-01	21.3337737208744
2007-10-01	22.7988113581334
2008-01-01	21.8554338848480
2008-04-01	24.0325349694633
2008-07-01	24.8428463666080
2008-10-01	21.1903482221154
2009-01-01	23.8185307017544
2009-04-01	25.5031839890835
2009-07-01	25.7689274447950
2009-10-01	22.7384129404716
2010-01-01	23.1814619948506
2010-04-01	20.7916474891597
2010-07-01	20.3025477707006
2010-10-01	22.3042553699854
2011-01-01	20.0467825734914
2011-04-01	21.0960436180624
2011-07-01	22.1105754066598
2011-10-01	21.1217262758423
2012-01-01	21.0065500738813
2012-04-01	18.2818234276050
2012-07-01	18.2814971777896
2012-10-01	18.8494849592079
2013-01-01	20.1144064655381
2013-04-01	19.4608168267443
2013-07-01	16.7237484212815
2013-10-01	20.1387798307984
2014-01-01	21.0676390482503
2014-04-01	17.9109902870474
2014-07-01	19.7203034201024
2014-10-01	20.0499664135217
2015-01-01	18.9305896526407
2015-04-01	18.7654666967959
2015-07-01	18.0545810617479
2015-10-01	17.0132882637525
2016-01-01	18.3736056276224
2016-04-01	18.9918112115371
2016-07-01	17.6332752343258
2016-10-01	15.3951298809659
2017-01-01	18.3261840245306
2017-04-01	19.2393515251338
2017-07-01	19.4841481085738
2017-10-01	17.1843115869308
2018-01-01	19.4610002868671
2018-04-01	20.4410606393084
2018-07-01	17.1650542818849