Year	Percent
2003-01-01	19.00790405
2004-01-01	20.45783615
2005-01-01	24.83843040
2006-01-01	27.26451111
2007-01-01	28.11198425
2008-01-01	31.72941780
2009-01-01	34.47662354
2010-01-01	36.69714355
2011-01-01	39.02056885