Quarter	Percent
1999-04-01	44.3549657883028
2000-04-01	44.5198697777641
2001-04-01	44.7255956153733
2002-04-01	44.2576094683265
2003-04-01	43.7683277775190
2004-04-01	43.9128677674095
2005-01-01	44.2563865310064
2005-04-01	44.3987162868954
2005-07-01	44.7520943813944
2005-10-01	44.9919945035059
2006-01-01	44.8224349500512
2006-04-01	45.4331616384596
2006-07-01	45.9451829138808
2006-10-01	46.2651827705263
2007-01-01	45.7875556821586
2007-04-01	46.5159802079542
2007-07-01	47.1501750307486
2007-10-01	47.3084459555038
2008-01-01	46.7467777790080
2008-04-01	46.8614727923044
2008-07-01	48.0232731428966
2008-10-01	48.0787705313772
2009-01-01	47.0897872146243
2009-04-01	47.2323040052075
2009-07-01	47.4269244566495
2009-10-01	48.3118335574655
2010-01-01	47.4231113617588
2010-04-01	47.8210563088900
2010-07-01	48.2045429480960
2010-10-01	48.4182724573364
2011-01-01	48.0720938885420
2011-04-01	48.8224395317020
2011-07-01	49.2612161509040
2011-10-01	49.4826390505882
2012-01-01	48.6002280513191
2012-04-01	49.0813093183372
2012-07-01	49.5827033983188
2012-10-01	49.5322291656465
2013-01-01	49.0830481809985
2013-04-01	49.6258284420583
2013-07-01	49.8508978731942
2013-10-01	49.8281003903736
2014-01-01	49.3611440970115
2014-04-01	49.7276244144613
2014-07-01	50.1989545818327