Year	Percent
2001-01-01	6.591289999999999
2002-01-01	5.345150000000000
2003-01-01	9.518910000000000
2004-01-01	11.543700000000000
2005-01-01	14.078800000000000
2006-01-01	17.290400000000000
2007-01-01	26.053600000000000
2008-01-01	8.821970000000000
2009-01-01	22.583300000000000
2010-01-01	19.993200000000000
2011-01-01	13.790600000000000
2012-01-01	14.490900000000000
2013-01-01	12.343600000000000
2014-01-01	10.580300000000000
2015-01-01	7.978780000000000
2016-01-01	14.244600000000000