Year	Percent
1995-01-01	22.856800000000000
1996-01-01	15.373800000000000
1997-01-01	15.425300000000000
1998-01-01	58.653200000000000
1999-01-01	22.894400000000000
2000-01-01	14.886700000000000
2001-01-01	17.997300000000000
2002-01-01	26.986200000000000
2003-01-01	57.709300000000000
2004-01-01	39.888300000000000
2005-01-01	20.928600000000000
2006-01-01	23.518900000000000
2007-01-01	37.492600000000000
2008-01-01	18.685600000000000
2009-01-01	16.071100000000000
2010-01-01	21.368100000000000
2011-01-01	17.957500000000000
2012-01-01	26.703000000000003
2013-01-01	28.678300000000000
2014-01-01	28.269000000000002