Year	Percent
1996-01-01	3.7735800000000004
1997-01-01	4.1237100000000000
1998-01-01	6.2500000000000000
1999-01-01	6.0000000000000000
2000-01-01	5.9405900000000000
2001-01-01	5.6074800000000010
2002-01-01	4.1666700000000000
2003-01-01	3.5503000000000000
2004-01-01	3.7037000000000000
2005-01-01	3.7500000000000000
2006-01-01	3.7735800000000004
2007-01-01	5.1612900000000000
2008-01-01	4.9079800000000000
2009-01-01	4.6783600000000000
2010-01-01	4.4943800000000005
2011-01-01	4.3956000000000000
2012-01-01	4.1450800000000000
2013-01-01	3.7037000000000000
2014-01-01	3.3898300000000003
2015-01-01	3.2705700000000000
2016-01-01	3.2511700000000000