Year	Percent
2000-01-01	30.41328
2001-01-01	29.75472
2002-01-01	29.63953
2003-01-01	29.32797
2004-01-01	29.38004
2005-01-01	26.45640
2006-01-01	27.55773
2007-01-01	33.18458
2008-01-01	44.51319
2009-01-01	52.60524
2010-01-01	51.66669