Year	Percent
2003-01-01	17.79322433
2004-01-01	20.10606194
2005-01-01	24.50034523
2006-01-01	26.38514137
2007-01-01	27.20348930
2008-01-01	30.83038902
2009-01-01	33.67389297
2010-01-01	35.78578186
2011-01-01	37.73188019