Year	Percent
2003-01-01	17.58546066
2004-01-01	20.61977959
2005-01-01	15.80657005
2006-01-01	19.85308075
2007-01-01	23.50223923
2008-01-01	25.91970062
2009-01-01	28.94515991
2010-01-01	32.27399826
2011-01-01	29.46730042
2012-01-01	28.07701302