Year	Percent
1999-01-01	8.5877000000000000
2000-01-01	6.0410600000000000
2001-01-01	5.0583000000000000
2002-01-01	3.3039300000000003
2003-01-01	5.2532500000000000
2004-01-01	4.6575200000000000
2005-01-01	5.5563300000000000
2006-01-01	5.2013500000000000
2007-01-01	5.2980900000000000
2008-01-01	4.9908900000000000
2009-01-01	8.2004100000000000
2010-01-01	9.9480700000000000
2011-01-01	8.4034400000000000
2012-01-01	10.5668000000000000
2013-01-01	9.6033200000000000
2014-01-01	9.6033900000000000
2015-01-01	8.3592700000000000
2016-01-01	9.9488399999999990