Quarter	Percent
2005-01-01	14.7671569531943
2005-04-01	13.9287669386061
2005-07-01	13.4417177823002
2005-10-01	13.0285111156036
2006-01-01	13.7909103099627
2006-04-01	12.6681566614121
2006-07-01	12.4669120205793
2006-10-01	12.1517702334280
2007-01-01	12.7448715292494
2007-04-01	12.0416127323510
2007-07-01	12.1109163141191
2007-10-01	11.9756956527252
2008-01-01	12.9305976185538
2008-04-01	12.6617309124278
2008-07-01	13.3585563518578
2008-10-01	14.5781781775581
2009-01-01	17.4728189067412
2009-04-01	18.1036355348654
2009-07-01	18.0990756725712
2009-10-01	18.2371048556284
2010-01-01	19.5800861026608
2010-04-01	17.9973077742409
2010-07-01	17.1758869042671
2010-10-01	17.0062530618409
2011-01-01	17.7032742415568
2011-04-01	16.8015005135900
2011-07-01	16.6832831717316
2011-10-01	16.4342569397395
2012-01-01	17.4977205989033
2012-04-01	16.8246393576026
2012-07-01	16.6231147226946
2012-10-01	16.4496629302846
2013-01-01	17.7335364796581
2013-04-01	16.7988731019714
2013-07-01	16.5802281482480
2013-10-01	15.5416448266844
2014-01-01	16.6898289501706
2014-04-01	15.5770561234302
2014-07-01	15.3855949089681
2014-10-01	14.4850676591733
2015-01-01	15.2852753285278
2015-04-01	14.4815582370915
2015-07-01	13.8017958317105
2015-10-01	13.6395042413136
2016-01-01	14.0252999378994
2016-04-01	13.3169064273660
2016-07-01	13.1423945344835
2016-10-01	12.9752356378455
2017-01-01	13.2476349273769
2017-04-01	12.2825668225328
2017-07-01	12.0423811014804
2017-10-01	11.5637757648406
2018-01-01	11.8341957056196
2018-04-01	11.3682185426027
2018-07-01	11.2818508007516