Quarter	Percent
1998-04-01	47.7151213270575
1999-04-01	48.4824956039188
2000-04-01	49.0529438612506
2001-01-01	50.5574936726178
2001-04-01	51.6167964658196
2001-07-01	52.1375105226037
2001-10-01	51.0009771172768
2002-01-01	50.1904071085321
2002-04-01	51.2946448780046
2002-07-01	51.6130490810029
2002-10-01	50.4820392404777
2003-01-01	49.6324026881963
2003-04-01	50.9220273343390
2003-07-01	51.4536453645364
2003-10-01	50.0471867697286
2004-01-01	49.3110103685085
2004-04-01	50.3697893321381
2004-07-01	50.8392265687942
2004-10-01	49.7435208207334
2005-01-01	49.2430171970392
2005-04-01	51.1071922853699
2005-07-01	51.7963004234455
2005-10-01	50.8701174268589
2006-01-01	50.5004123665381
2006-04-01	51.7672394653879
2006-07-01	52.8138240056787
2006-10-01	51.9103063573579
2007-01-01	51.6196077564287
2007-04-01	52.7115541538937
2007-07-01	53.6846040507554
2007-10-01	52.5573230938014
2008-01-01	52.3427717856907
2008-04-01	53.4444200833151
2008-07-01	53.9872198879552
2008-10-01	52.3642235265880
2009-01-01	50.6946099997833
2009-04-01	51.1527315195294
2009-07-01	51.5101794080183
2009-10-01	50.5286732562396
2010-01-01	50.0279581917502
2010-04-01	51.4501620832528
2010-07-01	52.3501435365697
2010-10-01	51.4574518100611
2011-01-01	51.0960278329171
2011-04-01	52.2361969729269
2011-07-01	52.8344864289516
2011-10-01	51.5945911468300
2012-01-01	50.8179654967281
2012-04-01	52.0236857185305
2012-07-01	52.6929354161809
2012-10-01	51.6673371302746
2013-01-01	51.1614131584514
2013-04-01	52.1437778669991
2013-07-01	53.1128651021442
2013-10-01	51.9924138657676
2014-01-01	51.3722848964472
2014-04-01	52.5751749353842
2014-07-01	53.6007216127205
2014-10-01	52.5901419657440