Year	Percent
1996-01-01	10.480700000000000000
1997-01-01	27.348200000000000000
1998-01-01	22.427700000000000000
1999-01-01	13.367900000000000000
2000-01-01	9.915700000000000000
2001-01-01	15.700800000000000000
2002-01-01	4.461030000000000000
2003-01-01	-0.047274000000000004
2004-01-01	13.644900000000000000
2005-01-01	16.201600000000000000
2006-01-01	25.013400000000000000
2007-01-01	26.627800000000000000
2008-01-01	34.496000000000000000
2009-01-01	26.313900000000000000
2010-01-01	29.753100000000000000
2011-01-01	26.059800000000000000
2012-01-01	24.589500000000000000
2013-01-01	23.969700000000000000
2014-01-01	22.025100000000000000
2015-01-01	19.164900000000000000
2016-01-01	18.796300000000000000