Year	Percent
2000-01-01	3.6703300000000003
2001-01-01	3.7200000000000000
2002-01-01	3.6800000000000000
2003-01-01	4.0300000000000000
2004-01-01	4.2800000000000000
2005-01-01	4.6100000000000000
2006-01-01	4.7600000000000000
2007-01-01	4.6300000000000000
2008-01-01	4.2700000000000000
2009-01-01	4.8800000000000000
2010-01-01	5.0400000000000000
2011-01-01	4.7600000000000000
2012-01-01	5.1100000000000000
2013-01-01	5.3700000000000000
2014-01-01	5.7100000000000000
2015-01-01	5.7000000000000000
2016-01-01	5.9000000000000000