Year	Percent
1995-01-01	1
1996-01-01	1
1997-01-01	1
1998-01-01	1
1999-01-01	2
2000-01-01	2
2001-01-01	2
2002-01-01	2
2003-01-01	2
2004-01-01	2
2005-01-01	2
2006-01-01	2
2007-01-01	2
2008-01-01	2
2009-01-01	2
2010-01-01	2
2011-01-01	2
2012-01-01	2
2013-01-01	2