Quarter	Percent
1999-04-01	51.9745925556900
1999-07-01	52.6325516594281
1999-10-01	52.5984537070563
2000-01-01	52.2554764201805
2000-04-01	52.4897015761374
2000-07-01	52.8961439042527
2000-10-01	52.7297210372480
2001-01-01	52.5622916548958
2001-04-01	52.6607038309339
2001-07-01	53.0427556287986
2001-10-01	52.9476527819792
2002-01-01	52.5374582186653
2002-04-01	52.5449559131818
2002-07-01	52.9708630267662
2002-10-01	53.1250218888118
2003-01-01	52.7868634536607
2003-04-01	53.0039866807825
2003-07-01	53.3853939598977
2003-10-01	53.1927570215568
2004-01-01	53.1231509261902
2004-04-01	53.0911670015923
2004-07-01	53.4345264122265
2004-10-01	53.4962433336910
2005-01-01	53.3296456352636
2005-04-01	53.1223235253488
2005-07-01	53.5556030294468
2005-10-01	53.4671614431976
2006-01-01	53.1291204263268
2006-04-01	53.2399473547113
2006-07-01	53.8181258339320
2006-10-01	53.6308039222386
2007-01-01	53.2149731744276
2007-04-01	53.4382465096150
2007-07-01	53.8438003549065
2007-10-01	53.8771700578682
2008-01-01	53.6060892452466
2008-04-01	53.5459303484604
2008-07-01	53.4975289747099
2008-10-01	53.1996230986674
2009-01-01	52.2272187766429
2009-04-01	51.4282378450505
2009-07-01	51.5056670617850
2009-10-01	51.2716949394819
2010-01-01	50.6740108703943
2010-04-01	51.0991902097115
2010-07-01	51.8516073668229
2010-10-01	51.5967127760060
2011-01-01	51.1913132043237
2011-04-01	51.2443761407464
2011-07-01	51.0915887972736
2011-10-01	51.0438812199351
2012-01-01	50.8609362212709
2012-04-01	51.3463097342540
2012-07-01	51.7032460107074
2012-10-01	51.6956679589746
2013-01-01	51.0392594750299
2013-04-01	51.2193860899182
2013-07-01	51.8160360627616
2013-10-01	51.9475252814594
2014-01-01	51.9718721778172
2014-04-01	52.1298772939237
2014-07-01	52.5657724199066
2014-10-01	52.4772881962530