Year	Percent
2001-01-01	7.530450000000000
2002-01-01	5.922650000000000
2003-01-01	7.923350000000000
2004-01-01	9.602680000000000
2005-01-01	12.299400000000000
2006-01-01	15.952500000000000
2007-01-01	14.800999999999998
2008-01-01	13.502300000000000
2009-01-01	15.015800000000000
2010-01-01	15.348700000000000
2011-01-01	11.042100000000000
2012-01-01	14.457700000000000
2013-01-01	13.331600000000000
2014-01-01	11.790600000000000
2015-01-01	11.641900000000000
2016-01-01	11.974800000000000