Year	Percent
1996-01-01	5.4450900000000000
1997-01-01	4.8610900000000000
1998-01-01	3.5866700000000000
1999-01-01	3.5531599999999997
2000-01-01	8.2051900000000000
2001-01-01	5.8918800000000005
2002-01-01	6.2172800000000010
2003-01-01	6.2348300000000005
2004-01-01	5.9885000000000000
2005-01-01	5.4585200000000000
2006-01-01	5.3619500000000000
2007-01-01	5.6797200000000000
2008-01-01	5.1137100000000000
2009-01-01	4.2876300000000000
2010-01-01	4.8885200000000000
2011-01-01	4.5054600000000000
2012-01-01	4.2029200000000000
2013-01-01	4.0249800000000000
2014-01-01	3.8489600000000000
2015-01-01	3.7509800000000000
2016-01-01	4.8551900000000000