Quarter	Percent
2005-01-01	41.0196921304581
2005-04-01	41.1155644007691
2005-07-01	40.2577851043118
2005-10-01	40.2986111187010
2006-01-01	40.3608261917262
2006-04-01	40.1703823566080
2006-07-01	39.4557996101942
2006-10-01	39.4926290142208
2007-01-01	40.2494337494131
2007-04-01	40.0719448680875
2007-07-01	40.1059139136008
2007-10-01	39.1261557132426
2008-01-01	40.0397767727986
2008-04-01	39.6410824644902
2008-07-01	39.9407398601452
2008-10-01	40.5563976744888
2009-01-01	40.8601696797182
2009-04-01	40.6510927838115
2009-07-01	39.4141052546186
2009-10-01	39.4681999309100
2010-01-01	40.6746386494683
2010-04-01	39.7072925952329
2010-07-01	39.8655181636029
2010-10-01	41.0422550435501
2011-01-01	41.2963033561261
2011-04-01	40.3783585956604
2011-07-01	39.8860290109477
2011-10-01	39.3697056932618
2012-01-01	40.3727772223458
2012-04-01	39.1302378771247
2012-07-01	38.9060890888300
2012-10-01	39.8711244538159
2013-01-01	40.6518410698253
2013-04-01	39.4901951730782
2013-07-01	39.4871146189238
2013-10-01	39.1948152736185
2014-01-01	40.2424699847717
2014-04-01	40.1340356352769
2014-07-01	40.0644946938771
2014-10-01	40.4613462986170
2015-01-01	40.8218687208456
2015-04-01	40.3306762103016
2015-07-01	40.0412658329549
2015-10-01	39.5772149139498
2016-01-01	40.7886300973415
2016-04-01	40.3625345754468
2016-07-01	39.8057891285244
2016-10-01	40.2779398813755
2017-01-01	40.7777716708957
2017-04-01	40.6614066789818
2017-07-01	40.5874845903670
2017-10-01	40.5755026388380
2018-01-01	41.0497403455469
2018-04-01	40.2119176849035