Year	Percent
1996-01-01	23.6907000000000000
1997-01-01	17.7610000000000000
1998-01-01	11.3411000000000000
1999-01-01	1.7991900000000000
2000-01-01	13.9534000000000000
2001-01-01	17.3284000000000000
2002-01-01	20.1782000000000000
2003-01-01	19.7724000000000000
2004-01-01	24.2271000000000000
2005-01-01	19.5313000000000000
2006-01-01	21.2343000000000000
2007-01-01	17.8621000000000000
2008-01-01	13.3405000000000000
2009-01-01	9.9455800000000000
2010-01-01	1.9485900000000000
2011-01-01	-9.6806500000000000
2012-01-01	-8.8777500000000000
2013-01-01	-4.0384500000000000
2014-01-01	-17.3083000000000000
2015-01-01	3.5589199999999996
2016-01-01	15.0638000000000000