Year	Percent
2004-01-01	4.4570000000000000
2005-01-01	4.5310000000000010
2006-01-01	4.1300000000000000
2007-01-01	4.3000000000000000
2008-01-01	4.7028099999999995
2009-01-01	4.8669500000000000
2010-01-01	5.0969400000000000
2011-01-01	5.1460000000000000
2012-01-01	5.2978000000000000
2013-01-01	5.2000000000000000
2014-01-01	5.2000000000000000
2015-01-01	5.2100000000000000
2016-01-01	5.2360000000000010