Year	Percent
1995-01-01	7.47
1996-01-01	8.49
1997-01-01	8.14
1998-01-01	7.65
1999-01-01	6.63
2000-01-01	6.60
2001-01-01	3.47
2002-01-01	4.29
2003-01-01	3.94
2004-01-01	5.97
2005-01-01	4.47
2006-01-01	4.52
2007-01-01	5.01
2008-01-01	3.90
2009-01-01	3.84
2010-01-01	4.16
2011-01-01	3.73
2012-01-01	4.05
2013-01-01	4.58
2014-01-01	5.00
2015-01-01	5.35
2016-01-01	6.65