Year	Percent
2000-01-01	39.76543
2001-01-01	39.10249
2002-01-01	37.00891
2003-01-01	42.51410
2004-01-01	42.93144
2005-01-01	37.72352
2006-01-01	40.00283
2007-01-01	50.29116
2008-01-01	54.80072
2009-01-01	58.17727
2010-01-01	58.82602