Quarter	Percent
2009-01-01	3.90
2009-04-01	4.10
2010-01-01	4.70
2010-04-01	4.50
2010-07-01	4.40
2010-10-01	3.80
2011-01-01	7.00
2011-04-01	5.50
2011-07-01	5.30
2011-10-01	4.10
2012-04-01	4.40
2012-07-01	4.10
2012-10-01	5.00
2013-01-01	3.80
2013-04-01	3.70
2013-07-01	2.00
2013-10-01	3.40
2014-01-01	3.50
2014-04-01	3.30
2014-07-01	2.45
2014-10-01	2.76
2015-01-01	3.60
2015-04-01	3.40
2015-07-01	3.00
2015-10-01	3.00
2016-01-01	3.00