Year	Percent
1994-01-01	9.889660000000001
1995-01-01	12.710600000000000
1996-01-01	12.970300000000000
1997-01-01	12.652600000000000
1998-01-01	20.121600000000000
1999-01-01	18.670900000000000
2000-01-01	11.941600000000000
2001-01-01	14.409300000000000
2002-01-01	17.372500000000000
2003-01-01	20.531700000000000
2004-01-01	22.547400000000000
2005-01-01	21.231100000000000
2006-01-01	21.385400000000000
2007-01-01	23.826900000000000
2008-01-01	22.845900000000000
2009-01-01	24.807900000000000
2010-01-01	27.410800000000000
2011-01-01	25.445000000000000