Quarter	Percent, Not Seasonally adjusted
1999-01-01	55.9615525465274
1999-04-01	57.5961574207074
1999-07-01	58.6651357623223
1999-10-01	57.9490452445583
2000-01-01	57.6085161768006
2000-04-01	59.9707434084577
2000-07-01	60.1708299545885
2000-10-01	59.5197806150006
2001-01-01	58.4352162094236
2001-04-01	59.5989144442164
2001-07-01	59.9493892010075
2001-10-01	59.3796011122306
2002-01-01	60.2369924716553
2002-04-01	60.8105340447156
2002-07-01	62.0965555128774
2002-10-01	60.8578642387580
2003-01-01	59.7809102938739
2003-04-01	60.7079952296670
2003-07-01	61.0579999200932
2003-10-01	61.3917120686133
2004-01-01	60.7903301032854
2004-04-01	62.8320623332261
2004-07-01	63.1881708578184
2004-10-01	62.2075549118898
2005-01-01	61.9745350573307
2005-04-01	63.1428001458169
2005-07-01	63.6031553438510
2005-10-01	63.7547895130590
2006-01-01	63.1552828758551
2006-04-01	63.8912426538530
2006-07-01	64.5216603717613
2006-10-01	64.0493305506819
2007-01-01	64.4091478727025
2007-04-01	65.2829329183612
2007-07-01	65.8689057962413
2007-10-01	65.5728934733043
2008-01-01	63.6226522388361
2008-04-01	65.3006571000552
2008-07-01	65.5891402080853
2008-10-01	64.4741336362165
2009-01-01	62.5916244379014
2009-04-01	63.6334058986608
2009-07-01	64.2468741838110
2009-10-01	63.3262606000557
2010-01-01	62.0138063456687
2010-04-01	63.4103539815647
2010-07-01	64.4446687393532
2010-10-01	63.5062970422287
2011-01-01	62.9202593439548
2011-04-01	63.9395481728998
2011-07-01	65.0645328236408
2011-10-01	64.0424876304138
2012-01-01	63.5940813382743
2012-04-01	65.1450718695884
2012-07-01	65.4888534580527
2012-10-01	64.7608424196171
2013-01-01	64.1388654924303
2013-04-01	64.4336421764466
2013-07-01	64.9570854934761
2013-10-01	64.0044553489172
2014-01-01	64.5111194947441
2014-04-01	64.8088486891401
2014-07-01	65.1958135835243
2014-10-01	64.7706210117701
2015-01-01	64.0677529886279
2015-04-01	64.4681616847749
2015-07-01	65.2267742721525