Year	Percent
2000-01-01	5.43
2001-01-01	7.25
2002-01-01	6.87
2003-01-01	6.66
2004-01-01	6.22
2005-01-01	11.13
2006-01-01	5.96
2007-01-01	6.74
2008-01-01	3.84
2009-01-01	5.57
2010-01-01	4.80
2011-01-01	3.27
2012-01-01	3.19
2013-01-01	3.69
2014-01-01	3.90
2015-01-01	4.19
2016-01-01	3.62