Year	Percent
1996-01-01	4.6036400000000000
1997-01-01	3.9644800000000004
1998-01-01	3.6211300000000004
1999-01-01	3.7133900000000000
2000-01-01	3.8862000000000000
2001-01-01	3.0780900000000000
2002-01-01	3.0815300000000000
2003-01-01	2.6229200000000000
2004-01-01	3.8706000000000000
2005-01-01	3.2535700000000000
2006-01-01	3.7644599999999997
2007-01-01	3.8239000000000000
2008-01-01	4.3979900000000000
2009-01-01	3.9001000000000000
2010-01-01	4.0054700000000000
2011-01-01	4.2418600000000000
2012-01-01	4.2418600000000000
2013-01-01	3.8502400000000003
2014-01-01	3.1645700000000000