Year	Percent
1998-01-01	13.58310
1999-01-01	13.58310
2000-01-01	13.58310
2001-01-01	14.26290
2002-01-01	14.26290
2003-01-01	14.26290
2004-01-01	14.26290
2005-01-01	47.99660
2006-01-01	45.48890
2007-01-01	6.50711
2008-01-01	13.51530