Quarter	Percent
2005-01-01	37.4230241082030
2005-04-01	38.5046578948441
2005-07-01	36.4413695693066
2005-10-01	37.8328030074255
2006-01-01	37.7535577404448
2006-04-01	37.3734658670967
2006-07-01	36.0461970660799
2006-10-01	36.8890451881639
2007-01-01	38.0171152036288
2007-04-01	38.2301987694633
2007-07-01	37.2652108551275
2007-10-01	35.9665460363184
2008-01-01	38.2010881058154
2008-04-01	38.0151753772964
2008-07-01	36.2403196389463
2008-10-01	38.6772316907693
2009-01-01	40.5006034376843
2009-04-01	40.1274033023001
2009-07-01	38.5784537644456
2009-10-01	37.6028845404594
2010-01-01	40.0795182976079
2010-04-01	38.3157752729863
2010-07-01	37.3619133976933
2010-10-01	39.3887746543069
2011-01-01	40.7828230387045
2011-04-01	39.6395014000769
2011-07-01	38.5904737977769
2011-10-01	38.0835931192249
2012-01-01	40.5296314039922
2012-04-01	38.8090407123617
2012-07-01	37.5366051348727
2012-10-01	39.8215201302302
2013-01-01	41.4266755815178
2013-04-01	40.1377178822722
2013-07-01	39.0532529993179
2013-10-01	40.1746024733955
2014-01-01	41.4329279816547
2014-04-01	41.2344985892281
2014-07-01	39.8747569415313
2014-10-01	41.9424840211583
2015-01-01	43.1295796967718
2015-04-01	42.4728357934542
2015-07-01	41.4725077388112
2015-10-01	41.1794647194817
2016-01-01	43.8718888035897
2016-04-01	43.3120228924902
2016-07-01	41.0102645973873
2016-10-01	42.8952385134870
2017-01-01	44.1470014145008
2017-04-01	43.3543930073432
2017-07-01	42.6168272199204
2017-10-01	42.9519827845305
2018-01-01	44.8628478779145
2018-04-01	43.6381969617858