Year	Percent
1994-01-01	22.976900000000000
1995-01-01	16.621900000000000
1996-01-01	14.783300000000000
1997-01-01	14.320400000000000
1998-01-01	12.943000000000000
1999-01-01	13.394800000000000
2000-01-01	12.712800000000000
2001-01-01	13.280600000000000
2002-01-01	13.505999999999998
2003-01-01	12.372900000000000
2004-01-01	11.950800000000000
2005-01-01	14.524200000000000
2006-01-01	13.682300000000000
2007-01-01	13.113500000000000
2008-01-01	14.848400000000000
2009-01-01	17.544200000000000
2010-01-01	23.961700000000000
2011-01-01	26.816200000000000
2012-01-01	7.008960000000001
2013-01-01	27.942800000000000
2014-01-01	28.783200000000000
2015-01-01	28.423600000000000
2016-01-01	28.298100000000000