Year	Percent
2000-01-01	23.80813
2001-01-01	27.72572
2002-01-01	31.03998
2003-01-01	33.07124
2004-01-01	33.25525
2005-01-01	34.25254
2006-01-01	33.85159
2007-01-01	34.95303
2008-01-01	39.10191
2009-01-01	40.28636
2010-01-01	37.25294