Year	Percent
1996-01-01	9.003570000000000
1997-01-01	11.844900000000000
1998-01-01	14.585999999999999
1999-01-01	14.788800000000000
2000-01-01	14.482800000000000
2001-01-01	12.384100000000000
2002-01-01	12.685800000000000
2003-01-01	19.159800000000000
2004-01-01	18.414800000000000
2005-01-01	17.368400000000000
2006-01-01	36.496200000000000
2007-01-01	34.524200000000000
2008-01-01	34.545100000000000
2009-01-01	38.028400000000000
2010-01-01	42.746100000000000
2011-01-01	35.860700000000000
2012-01-01	40.156400000000000
2013-01-01	40.792500000000000
2014-01-01	42.917600000000000
2015-01-01	56.226900000000000
2016-01-01	61.274700000000000