Year	Percent
2000-01-01	33.32657
2001-01-01	37.63308
2002-01-01	43.62416
2003-01-01	29.01112
2004-01-01	32.25688
2005-01-01	24.97891
2006-01-01	25.61618
2007-01-01	21.14965
2008-01-01	21.15225
2009-01-01	23.24059
2010-01-01	23.04830