Quarter	Percent
2005-01-01	47.2979263255272
2005-04-01	48.5831338454549
2005-07-01	48.8936431403494
2005-10-01	49.4096914020777
2006-01-01	49.6225847742633
2006-04-01	49.9054718583764
2006-07-01	50.0832573891695
2006-10-01	50.5075744475510
2007-01-01	49.9312405205876
2007-04-01	50.8197926489138
2007-07-01	50.2063717964432
2007-10-01	51.4794047090370
2008-01-01	50.8090513550908
2008-04-01	51.4038177865511
2008-07-01	50.3589622590733
2008-10-01	50.3805056498363
2009-01-01	50.2752644427166
2009-04-01	50.8455160854118
2009-07-01	51.7639084706052
2009-10-01	51.8855526446686
2010-01-01	50.6151757673547
2010-04-01	51.7438161520659
2010-07-01	51.0167373218800
2010-10-01	50.2819677589951
2011-01-01	50.5217242346679
2011-04-01	51.3562282893381
2011-07-01	51.3668128488201
2011-10-01	53.1453142784874
2012-01-01	52.2107434429448
2012-04-01	53.4463376413214
2012-07-01	53.2447617080463
2012-10-01	52.9716227217332
2013-01-01	52.2851794958779
2013-04-01	53.5238748353805
2013-07-01	53.3776126534328
2013-10-01	53.7589880891644
2014-01-01	52.4050104741208
2014-04-01	52.5991268161955
2014-07-01	51.9777238422650
2014-10-01	52.4500228206659
2015-01-01	52.4800433471764
2015-04-01	53.0842496364021
2015-07-01	52.8554637549432
2015-10-01	54.1802400715225
2016-01-01	53.4528185133318
2016-04-01	53.6245922457458
2016-07-01	53.6833899544711
2016-10-01	53.6509401479011
2017-01-01	53.4438169471556
2017-04-01	53.5346214099694
2017-07-01	53.2174792940781
2017-10-01	53.9159616737623
2018-01-01	53.5986702063564
2018-04-01	54.5875058358088