Year	Percent
1996-01-01	35.430300000000000
1997-01-01	35.209700000000000
1998-01-01	26.734500000000000
1999-01-01	23.415900000000000
2000-01-01	16.076500000000000
2001-01-01	16.866700000000000
2002-01-01	18.538200000000000
2003-01-01	16.082600000000000
2004-01-01	7.827470000000000
2005-01-01	21.126100000000000
2006-01-01	11.259800000000000
2007-01-01	13.849800000000000
2008-01-01	-8.843810000000001
2009-01-01	-7.164430000000000
2010-01-01	7.983600000000000
2011-01-01	9.436739999999999
2012-01-01	14.471400000000000
2013-01-01	17.744800000000000
2014-01-01	15.114000000000000
2015-01-01	16.044900000000000
2016-01-01	18.644100000000000