Quarter	Percent
1999-04-01	37.9115919151545
2000-04-01	38.3011408235696
2001-04-01	38.7983687131494
2002-04-01	38.8010567055453
2003-04-01	38.7486020648642
2004-04-01	39.1424968474149
2005-01-01	39.4052813134773
2005-04-01	39.1591096455070
2005-07-01	39.4004210607270
2005-10-01	39.7459226310824
2006-01-01	39.9739746192405
2006-04-01	40.4147756925956
2006-07-01	40.7960785918755
2006-10-01	40.9532630482131
2007-01-01	40.8755345378896
2007-04-01	41.3852826383763
2007-07-01	41.8859495719672
2007-10-01	42.2204076899662
2008-01-01	41.7088057901086
2008-04-01	41.6769735589036
2008-07-01	42.6184032639952
2008-10-01	43.1305129990715
2009-01-01	42.2721629424905
2009-04-01	42.6198189821742
2009-07-01	42.5727103058110
2009-10-01	43.8261583851385
2010-01-01	42.9805673225145
2010-04-01	43.3076883760438
2010-07-01	43.5002532780018
2010-10-01	43.8346036548292
2011-01-01	43.6621905409802
2011-04-01	44.3220575487332
2011-07-01	44.7139309635229
2011-10-01	44.8814354958802
2012-01-01	44.1469286669265
2012-04-01	44.5832839827865
2012-07-01	44.8972698988724
2012-10-01	45.0134890533989
2013-01-01	45.0364768815106
2013-04-01	45.2749390529193
2013-07-01	45.5093417903539
2013-10-01	45.4319583160964
2014-01-01	45.3076580926894
2014-04-01	45.6335471110488
2014-07-01	45.8503120140160