Year	Percent
1996-01-01	13.931600000000000
1997-01-01	14.779000000000002
1998-01-01	15.394900000000000
1999-01-01	-3.922280000000000
2000-01-01	19.792500000000000
2001-01-01	21.238300000000000
2002-01-01	21.192400000000000
2003-01-01	21.506700000000000
2004-01-01	25.417700000000000
2005-01-01	30.888000000000000
2006-01-01	31.620600000000000
2007-01-01	23.774100000000000
2008-01-01	16.770900000000000
2009-01-01	14.659400000000000
2010-01-01	13.771300000000000
2011-01-01	14.808700000000000
2012-01-01	14.611100000000000
2013-01-01	14.795400000000000
2014-01-01	15.517600000000000
2015-01-01	14.828600000000000
2016-01-01	12.474500000000000