Year	Percent
2000-01-01	2.22412649537624
2001-01-01	1.95016860006369
2002-01-01	2.01911958882928
2003-01-01	1.94016323740230
2004-01-01	1.91842044855787
2005-01-01	1.95798941115185
2006-01-01	2.28067863244287
2007-01-01	2.28330784585366
2008-01-01	2.34890687092929
2009-01-01	2.98488097312871
2010-01-01	3.19532520919594
2011-01-01	3.42043296934989
2012-01-01	3.45421513966976
2013-01-01	3.31429555095621
2014-01-01	2.75140856014174