Year	Percent
1994-01-01	5.002350000000000
1995-01-01	4.061560000000000
1996-01-01	3.813680000000000
1997-01-01	4.789680000000001
1998-01-01	4.839730000000000
1999-01-01	5.696550000000000
2000-01-01	5.296710000000000
2001-01-01	5.944090000000000
2002-01-01	6.858700000000000
2003-01-01	8.972100000000000
2004-01-01	9.499650000000000
2005-01-01	10.926400000000000
2006-01-01	11.670800000000000
2007-01-01	10.066100000000000
2008-01-01	8.294139999999999
2009-01-01	12.713400000000000
2010-01-01	12.884000000000000
2011-01-01	12.493100000000000
2012-01-01	16.377800000000000
2013-01-01	15.864700000000000
2014-01-01	13.759500000000000
2015-01-01	14.344900000000000
2016-01-01	14.715400000000000