Year	Percent
1993-01-01	2.8394400000000000
1994-01-01	7.8357800000000010
1995-01-01	9.6438200000000000
1996-01-01	9.4326500000000000
1997-01-01	7.5065000000000000
1998-01-01	6.8718400000000000
1999-01-01	6.2917200000000000
2000-01-01	3.9950099999999997
2001-01-01	4.3957700000000000
2002-01-01	5.6107500000000000
2003-01-01	6.1074800000000010
2004-01-01	6.4999500000000000
2005-01-01	6.9566200000000000
2006-01-01	7.7350600000000010
2007-01-01	8.1142700000000000
2008-01-01	7.2794700000000000
2009-01-01	7.0932400000000000
2010-01-01	6.8476600000000000
2011-01-01	6.9880100000000010
2012-01-01	6.7194500000000000