Year	Percent
1995-01-01	6.09
1996-01-01	6.21
1997-01-01	6.54
1998-01-01	6.84
1999-01-01	6.84
2000-01-01	6.51
2001-01-01	5.22
2002-01-01	5.42
2003-01-01	6.24
2004-01-01	6.85
2005-01-01	6.96
2006-01-01	7.01
2007-01-01	7.20
2008-01-01	6.21
2009-01-01	7.75
2010-01-01	7.98
2011-01-01	7.56
2012-01-01	7.77
2013-01-01	8.47
2014-01-01	9.25
2015-01-01	10.07
2016-01-01	10.66