Quarter	Percent
2005-01-01	40.4973189543373
2005-04-01	39.8250769419790
2005-07-01	39.5613417093241
2005-10-01	39.6399022129680
2006-01-01	39.9984982646050
2006-04-01	39.3498150789290
2006-07-01	39.0512262144917
2006-10-01	39.1839988847475
2007-01-01	39.6661327742979
2007-04-01	39.1463449442192
2007-07-01	38.9572620628597
2007-10-01	38.9131903239593
2008-01-01	39.3211514603485
2008-04-01	38.6036987443290
2008-07-01	38.5998351344182
2008-10-01	38.6814572213747
2009-01-01	39.0180206481091
2009-04-01	38.4213816566631
2009-07-01	38.2026669906593
2009-10-01	38.5079353657501
2010-01-01	38.8305553004170
2010-04-01	38.2655988651185
2010-07-01	38.2014188283908
2010-10-01	38.5264564976122
2011-01-01	38.7776112083256
2011-04-01	38.1057588319325
2011-07-01	38.0417155304523
2011-10-01	38.1211858127257
2012-01-01	38.4585947442121
2012-04-01	37.7015735827628
2012-07-01	37.6348637715344
2012-10-01	37.6777270473884
2013-01-01	37.9969857939696
2013-04-01	37.3509073948851
2013-07-01	37.3433212111963
2013-10-01	37.3901818402660
2014-01-01	37.6363983324976
2014-04-01	37.2069721225941
2014-07-01	37.1859691716648
2014-10-01	37.1132793797926
2015-01-01	37.5059117020944
2015-04-01	36.9293875597694
2015-07-01	36.9135110366493
2015-10-01	36.7299234824733
2016-01-01	36.9215136812405
2016-04-01	36.4905310187317
2016-07-01	36.2280864508261
2016-10-01	36.3233389982302
2017-01-01	36.4630072837107
2017-04-01	35.9946580061247
2017-07-01	35.7765349830967
2017-10-01	35.7965341098187
2018-01-01	35.9589994831770
2018-04-01	35.4841311832063