Year	Percent
1996-01-01	90.714100000000000
1997-01-01	12.244300000000000
1998-01-01	6.837950000000000
1999-01-01	11.636300000000000
2000-01-01	18.053000000000000
2001-01-01	27.491400000000000
2002-01-01	32.635800000000000
2003-01-01	18.399800000000000
2004-01-01	23.182900000000000
2005-01-01	16.454900000000000
2006-01-01	21.482600000000000
2007-01-01	22.808200000000000
2008-01-01	16.965700000000000
2009-01-01	29.538100000000000
2010-01-01	33.338400000000000
2011-01-01	20.236900000000000
2012-01-01	-4.287319999999999
2013-01-01	16.027000000000000
2014-01-01	12.873600000000000
2015-01-01	10.498100000000000
2016-01-01	6.885170000000000