Year	Percent
2001-01-01	8.26331
2002-01-01	13.11270
2003-01-01	16.64570
2004-01-01	16.99290
2005-01-01	16.88310
2006-01-01	18.31180
2007-01-01	16.80880
2008-01-01	12.47500
2009-01-01	11.55750
2010-01-01	11.07240
2011-01-01	10.50850