Year	Percent
1996-01-01	4.2967300000000000
1997-01-01	4.2106100000000000
1998-01-01	5.1247800000000000
1999-01-01	5.1704800000000000
2000-01-01	4.4573800000000010
2001-01-01	4.7691300000000005
2002-01-01	6.8068200000000000
2003-01-01	6.3256600000000000
2004-01-01	5.6262600000000000
2005-01-01	4.6900100000000000
2006-01-01	5.6176800000000000
2007-01-01	5.9249000000000000
2008-01-01	5.6266000000000000
2009-01-01	6.0913699999999995