Quarter	Percent
2005-01-01	50.7915140280414
2005-04-01	50.2392589557481
2005-07-01	51.4237722543604
2005-10-01	51.6846968266438
2006-01-01	52.3912232856380
2006-04-01	53.1838429596074
2006-07-01	52.7306610150912
2006-10-01	54.5208279726678
2007-01-01	54.0758132474570
2007-04-01	54.8761123774709
2007-07-01	53.1614712097565
2007-10-01	55.5581367517758
2008-01-01	56.3716926701606
2008-04-01	55.2960312296682
2008-07-01	54.7057391438053
2008-10-01	56.6172204142385
2009-01-01	55.6027518303459
2009-04-01	54.7405454030141
2009-07-01	54.6872601099272
2009-10-01	56.3852122878963
2010-01-01	56.6979952886880
2010-04-01	56.7212585044190
2010-07-01	58.4561358404132
2010-10-01	60.1467605569609
2011-01-01	59.1687891375076
2011-04-01	60.1130092285145
2011-07-01	59.2043387224110
2011-10-01	60.4782811560148
2012-01-01	61.8093374336036
2012-04-01	62.2593488657852
2012-07-01	62.7869616349040
2012-10-01	64.0070153950758
2013-01-01	63.2704359849788
2013-04-01	63.7430159769274
2013-07-01	63.4235750473568
2013-10-01	65.3473861580233
2014-01-01	64.7287079484354
2014-04-01	64.3860510214250
2014-07-01	63.5564287694394
2014-10-01	64.2802924371962
2015-01-01	63.6758307068555
2015-04-01	64.0815415532086
2015-07-01	64.2054462265051
2015-10-01	66.0050169666583
2016-01-01	63.7437560080830
2016-04-01	63.6752785735224
2016-07-01	63.5911441756386
2016-10-01	64.2414528143194
2017-01-01	64.2925955650642
2017-04-01	64.0593154408146
2017-07-01	65.8578288663444
2017-10-01	66.8545094739296
2018-01-01	66.0956576057997
2018-04-01	65.3485050808303
2018-07-01	64.5526663262253