Year	Percent
1999-01-01	10.0964000000000000
2000-01-01	9.5902200000000000
2001-01-01	7.4592000000000000
2002-01-01	6.8548800000000005
2003-01-01	6.3826600000000000
2004-01-01	9.3511600000000000
2005-01-01	8.0949600000000000
2006-01-01	8.6162900000000000
2007-01-01	9.1501100000000000
2008-01-01	7.4649700000000000
2009-01-01	6.2827900000000000
2010-01-01	5.7675100000000000
2011-01-01	7.1801000000000000
2012-01-01	7.0347800000000005
2013-01-01	7.5254699999999990
2014-01-01	8.4941800000000000
2015-01-01	6.6201800000000000
2016-01-01	10.0527000000000000