Year	Percent
2000-01-01	2.43846327468562
2001-01-01	2.57478540309503
2002-01-01	2.75944709143992
2003-01-01	2.93179879167528
2004-01-01	3.02445680310507
2005-01-01	3.16323511988794
2006-01-01	2.44319429632424
2007-01-01	1.81196021075972
2008-01-01	1.88134375277351
2009-01-01	2.25471936704497
2010-01-01	2.52885037057316
2011-01-01	2.29292520370136
2012-01-01	2.23056421298699
2013-01-01	2.43312949245944