Year	Percent
1996-01-01	8.1910400000000000
1997-01-01	8.9789000000000000
1998-01-01	6.8896500000000000
1999-01-01	5.8714900000000005
2000-01-01	3.8899400000000000
2001-01-01	3.8918900000000000
2002-01-01	4.4073300000000000
2003-01-01	3.7351400000000003
2004-01-01	1.5568899999999999
2005-01-01	3.7639800000000000
2006-01-01	2.1971400000000000
2007-01-01	2.6764000000000000
2008-01-01	-1.5787200000000001
2009-01-01	-1.2845000000000000
2010-01-01	1.4385800000000000
2011-01-01	1.6177100000000000
2012-01-01	2.5208700000000000
2013-01-01	3.1948700000000000
2014-01-01	2.7575800000000000
2015-01-01	2.7163400000000000
2016-01-01	2.7444000000000000