Year	Percent
1996-01-01	5.1275000000000000
1997-01-01	4.7752800000000000
1998-01-01	4.4206699999999990
1999-01-01	4.9474900000000000
2000-01-01	4.2318300000000000
2001-01-01	2.1004700000000000
2002-01-01	4.7739400000000005
2003-01-01	4.2835500000000000
2004-01-01	7.5329000000000000
2005-01-01	4.8625800000000000
2006-01-01	4.9770400000000010
2007-01-01	4.9122100000000000
2008-01-01	5.2150900000000000
2009-01-01	4.6663300000000000
2010-01-01	5.5516600000000000
2011-01-01	5.1210400000000000
2012-01-01	5.0291700000000000
2013-01-01	5.0291700000000000
2014-01-01	5.0291700000000000
2015-01-01	3.7267099999999997