Year	Percent
1996-01-01	32.248900000000000
1997-01-01	28.139700000000000
1998-01-01	35.336900000000000
1999-01-01	23.452200000000000
2000-01-01	22.310400000000000
2001-01-01	23.802600000000000
2002-01-01	28.458800000000000
2003-01-01	31.102800000000000
2004-01-01	26.098600000000000
2005-01-01	25.023000000000003
2006-01-01	24.201999999999998
2007-01-01	25.421100000000000
2008-01-01	24.381900000000000
2009-01-01	23.607100000000000
2010-01-01	27.738200000000000
2011-01-01	33.127700000000000
2012-01-01	15.676400000000000
2013-01-01	10.933800000000000
2014-01-01	12.091600000000000