Year	Percent
1998-01-01	9.800000000000000
1999-01-01	10.900000000000000
2000-01-01	10.800000000000000
2001-01-01	12.900000000000000
2002-01-01	10.700000000000000
2003-01-01	11.300000000000000
2004-01-01	9.400000000000000
2005-01-01	13.400000000000000
2006-01-01	13.800000000000000
2007-01-01	13.500000000000000
2008-01-01	13.300000000000000
2009-01-01	9.700000000000000
2010-01-01	9.963410000000001
2011-01-01	10.065900000000000
2012-01-01	9.970080000000001
2013-01-01	9.745330000000001
2014-01-01	9.744100000000000
2015-01-01	9.717550000000000
2016-01-01	9.378130000000000