Year	Percent
1995-01-01	50
1996-01-01	60
1997-01-01	60
1998-01-01	60
1999-01-01	60
2000-01-01	60
2001-01-01	67
2002-01-01	67
2003-01-01	67
2004-01-01	67
2005-01-01	67
2006-01-01	71
2007-01-01	71
2008-01-01	83
2009-01-01	86