Year	Percent
1996-01-01	23.771100000000000
1997-01-01	11.067000000000000
1998-01-01	13.044800000000000
1999-01-01	23.136600000000000
2000-01-01	20.092600000000000
2001-01-01	23.886000000000000
2002-01-01	14.681000000000000
2003-01-01	15.630800000000000
2004-01-01	17.290500000000000
2005-01-01	18.191000000000000
2006-01-01	20.828300000000000
2007-01-01	19.790400000000000
2008-01-01	15.692100000000000
2009-01-01	13.191200000000000
2010-01-01	13.301500000000000
2011-01-01	12.615000000000000
2012-01-01	14.113500000000000
2013-01-01	14.018400000000000
2014-01-01	12.110999999999999
2015-01-01	7.887450000000000
2016-01-01	9.443489999999999