Quarter	Percent
1999-01-01	36.3023749122491
1999-04-01	37.0130248071078
1999-07-01	37.5076726439615
1999-10-01	37.7237355066799
2000-01-01	38.0398984549350
2000-04-01	38.7311207045762
2000-07-01	39.2127346742816
2000-10-01	39.3508799050530
2001-01-01	39.4415249307686
2001-04-01	39.8331479145967
2001-07-01	40.2386020714078
2001-10-01	40.2404353829908
2002-01-01	40.3223873002204
2002-04-01	40.8303461845668
2002-07-01	41.0144962668477
2002-10-01	40.9822582823625
2003-01-01	41.0522017940989
2003-04-01	41.6611670635945
2003-07-01	42.0212892624961
2003-10-01	42.0641187056757
2004-01-01	41.9956326924168
2004-04-01	42.4299580384012
2004-07-01	42.8910808427609
2004-10-01	43.1327633865569
2005-01-01	43.5113085603212
2005-04-01	44.2985853102538
2005-07-01	44.7384969766772
2005-10-01	44.7503876537999
2006-01-01	44.7557435135444
2006-04-01	45.2954785586767
2006-07-01	45.5510059718954
2006-10-01	45.5545956334321
2007-01-01	45.4941335182953
2007-04-01	45.9817957585994
2007-07-01	46.1440971913410
2007-10-01	45.8250112251692
2008-01-01	45.4508383717931
2008-04-01	45.3568682586059
2008-07-01	45.0152631970814
2008-10-01	43.7859009543022
2009-01-01	42.0411464498815
2009-04-01	41.7004841855929
2009-07-01	41.5230450464945
2009-10-01	41.0123251476868
2010-01-01	40.4728841288508
2010-04-01	40.6552592894528
2010-07-01	40.7655315830517
2010-10-01	40.4019228605796
2011-01-01	39.8425860857344
2011-04-01	40.2376836646500
2011-07-01	39.9027283972204
2011-10-01	39.1434288720793
2012-01-01	38.3227810555154
2012-04-01	38.3309518361990
2012-07-01	38.1505274181881
2012-10-01	37.4487329838861
2013-01-01	36.8243630411420
2013-04-01	37.1563804541754
2013-07-01	37.3699210091397
2013-10-01	37.2145146858250
2014-01-01	36.8678047793774
2014-04-01	37.7206329884358
2014-07-01	38.0533320579322
2014-10-01	38.1932805078206