Year	Percent
1996-01-01	5.8126600000000000
1997-01-01	5.5237500000000000
1998-01-01	5.3739800000000000
1999-01-01	4.2196500000000000
2000-01-01	5.3803300000000010
2001-01-01	4.3916300000000000
2002-01-01	4.8552400000000000
2003-01-01	4.9168300000000000
2004-01-01	5.5263300000000010
2005-01-01	4.8065000000000000
2006-01-01	5.3886400000000005
2007-01-01	4.9690199999999995
2008-01-01	6.0139300000000000
2009-01-01	5.9841800000000000
2010-01-01	4.9148200000000000
2011-01-01	4.5749200000000000
2012-01-01	5.3207600000000000
2013-01-01	5.4351300000000000
2014-01-01	4.0575700000000000
2015-01-01	4.6818500000000000
2016-01-01	3.6013300000000004