Year	Percent
1996-01-01	46.039600000000000
1997-01-01	58.025500000000000
1998-01-01	49.781900000000000
1999-01-01	46.403999999999996
2000-01-01	47.472100000000000
2001-01-01	48.928999999999995
2002-01-01	54.801900000000000
2003-01-01	53.972600000000000
2004-01-01	33.949100000000000
2005-01-01	31.704200000000000
2006-01-01	31.577600000000000
2007-01-01	27.888200000000000
2008-01-01	35.611900000000000
2009-01-01	35.211100000000000
2010-01-01	32.835600000000000
2011-01-01	35.168600000000000
2012-01-01	35.716400000000000
2013-01-01	39.690300000000000
2014-01-01	34.616700000000000