Year	Percent
1996-01-01	3.6767100000000000
1997-01-01	3.5833400000000000
1998-01-01	3.6714900000000004
1999-01-01	3.9443500000000000
2000-01-01	4.2497400000000000
2001-01-01	4.1997200000000000
2002-01-01	3.9462800000000002
2003-01-01	4.7739800000000000
2004-01-01	4.2224000000000000
2005-01-01	3.9496000000000000
2006-01-01	5.1528000000000000
2007-01-01	4.5105000000000000
2008-01-01	3.8633599999999997
2009-01-01	3.9495000000000000
2010-01-01	4.4575200000000000
2011-01-01	3.7907699999999998
2012-01-01	4.0403699999999990
2013-01-01	3.2049200000000000
2014-01-01	1.3972200000000001
2015-01-01	4.3904800000000000
2016-01-01	2.9899500000000000