Year	Percent
1996-01-01	6.038550000000000
1997-01-01	12.813800000000000
1998-01-01	12.450000000000000
1999-01-01	10.120600000000000
2000-01-01	11.964400000000000
2001-01-01	11.487900000000000
2002-01-01	9.758640000000000
2003-01-01	14.159800000000000
2004-01-01	22.775800000000000
2005-01-01	28.053800000000000
2006-01-01	30.441600000000000
2007-01-01	26.956600000000000
2008-01-01	15.866000000000000
2009-01-01	15.866000000000000
2010-01-01	13.530800000000000
2011-01-01	11.763800000000000
2012-01-01	9.196069999999999