Year	Percent
1998-01-01	23.7525000000000000
1999-01-01	21.3852000000000000
2000-01-01	22.7472000000000000
2001-01-01	20.7527000000000000
2002-01-01	15.8259999999999990
2003-01-01	13.7186000000000000
2004-01-01	13.8418000000000000
2005-01-01	9.8289600000000000
2006-01-01	11.0844000000000000
2007-01-01	12.1546000000000000
2008-01-01	11.6976000000000000
2009-01-01	11.1864000000000000
2010-01-01	-15.9769000000000000
2011-01-01	-6.5633200000000000
2012-01-01	-0.6078660000000000
2013-01-01	-1.5286600000000001
2014-01-01	-2.1717100000000000
2015-01-01	1.6239000000000000
2016-01-01	-4.3707600000000000