Quarter	Percent
2005-01-01	30.0087432438599
2005-04-01	29.4324759281389
2005-07-01	29.0726607229826
2005-10-01	29.5464710560009
2006-01-01	29.9821731060478
2006-04-01	29.3829225371262
2006-07-01	29.0744338692806
2006-10-01	29.4493726911177
2007-01-01	30.0146716458649
2007-04-01	29.4126156427258
2007-07-01	29.1709495773872
2007-10-01	29.6056602240622
2008-01-01	30.0510330618348
2008-04-01	29.4233135776843
2008-07-01	29.1853118982489
2008-10-01	29.8128890771205
2009-01-01	30.3789286629714
2009-04-01	30.0039984542109
2009-07-01	29.9284526723610
2009-10-01	30.4726955729424
2010-01-01	30.7993756141618
2010-04-01	30.2672204633968
2010-07-01	30.1946598703575
2010-10-01	30.7938288270836
2011-01-01	31.1060439280110
2011-04-01	30.5966072851633
2011-07-01	30.4433615868580
2011-10-01	30.8206477794929
2012-01-01	31.2935965307478
2012-04-01	30.6335210310390
2012-07-01	30.4831750018178
2012-10-01	30.9310074815922
2013-01-01	31.4132915315554
2013-04-01	30.8040204296750
2013-07-01	30.7160286548873
2013-10-01	31.2442602910957
2014-01-01	31.5874226262459
2014-04-01	31.1426405426871
2014-07-01	30.8795726583682
2014-10-01	31.3625682794232
2015-01-01	31.6336310578306
2015-04-01	31.2349611078305
2015-07-01	31.0473827473266
2015-10-01	31.4109871786132
2016-01-01	31.6417487510506
2016-04-01	31.1180941848943
2016-07-01	30.8917902303356
2016-10-01	31.2979977037734
2017-01-01	31.5978268939322
2017-04-01	31.1154878218506
2017-07-01	30.8585189086596
2017-10-01	31.3491018403418
2018-01-01	31.5240926895025
2018-04-01	31.0160648562699