Year	Percent
1997-01-01	100
1998-01-01	100
1999-01-01	100
2000-01-01	100
2001-01-01	100
2002-01-01	100
2003-01-01	100
2004-01-01	100
2005-01-01	100
2006-01-01	100
2007-01-01	100
2008-01-01	100
2009-01-01	100
2010-01-01	100
2011-01-01	100
2012-01-01	100