Year	Percent
2003-01-01	17.48646927
2004-01-01	20.34427071
2005-01-01	15.48867989
2006-01-01	19.44944000
2007-01-01	23.10718918
2008-01-01	25.55409050
2009-01-01	28.61495018
2010-01-01	31.92097092
2011-01-01	29.12254906
2012-01-01	27.74451256