Quarter	Percent
1999-07-01	47.5600204143836
1999-10-01	49.8323272971160
2000-01-01	55.4474914608622
2000-04-01	48.6814502278837
2000-07-01	48.6877301456415
2000-10-01	52.0164041902902
2001-01-01	57.4527584582040
2001-04-01	49.3640230774917
2001-07-01	49.1534229715368
2001-10-01	50.7502329854781
2002-01-01	55.4209647161732
2002-04-01	49.5606011465091
2002-07-01	50.4032954018545
2002-10-01	52.3599659713834
2003-01-01	58.3978474031396
2003-04-01	52.2913047235337
2003-07-01	52.2372212615287
2003-10-01	53.0087084913598
2004-01-01	55.6162766824227
2004-04-01	51.4710909995299
2004-07-01	51.7319156382015
2004-10-01	52.6937655801253
2005-01-01	56.3119682280516
2005-04-01	51.7038432506288
2005-07-01	52.4114435217797
2005-10-01	53.4497781241741
2006-01-01	56.4371491729553
2006-04-01	51.5527689252588
2006-07-01	52.5002353724846
2006-10-01	51.2551974746548
2007-01-01	55.7160837707600
2007-04-01	50.4820274802728
2007-07-01	51.5541841672014
2007-10-01	52.1981813222227
2008-01-01	55.5315698038239
2008-04-01	50.4834602429236
2008-07-01	50.9927739081550
2008-10-01	51.8377182035070
2009-01-01	55.6657764479129
2009-04-01	50.7516187049820
2009-07-01	51.3328980648766
2009-10-01	52.5642075638393
2010-01-01	54.8721368043943
2010-04-01	50.2360972032876
2010-07-01	50.8918673270257
2010-10-01	51.5513942750356
2011-01-01	54.6553713559134
2011-04-01	49.7026232306967
2011-07-01	49.6495517085162
2011-10-01	50.0653204653542
2012-01-01	52.1659519533917
2012-04-01	48.0521410008256
2012-07-01	49.2560357957174
2012-10-01	49.3713156335576
2013-01-01	51.6942254363144
2013-04-01	46.9514642191916
2013-07-01	47.5894216398200
2013-10-01	47.9003019038833
2014-01-01	49.1587898706831
2014-04-01	45.6564227201422
2014-07-01	46.1118559038606
2014-10-01	46.5008593114708
2015-01-01	47.7579970397089
2015-04-01	45.0203354692204
2015-07-01	44.8366398728343
2015-10-01	45.1667972517504
2016-01-01	47.2739266093292
2016-04-01	44.4920467421458
2016-07-01	44.4386777217152
2016-10-01	44.8450480884341
2017-01-01	46.2801690259060
2017-04-01	43.7227865704868
2017-07-01	43.3941669276581
2017-10-01	43.1611348353532
2018-01-01	45.4104631064741
2018-04-01	43.5500199057607
2018-07-01	43.7965426365386