Year	Percent
1998-01-01	6.3000000000000000
1999-01-01	6.1000000000000000
2000-01-01	6.1000000000000000
2001-01-01	5.9000000000000000
2002-01-01	5.7000000000000000
2003-01-01	5.9000000000000000
2004-01-01	5.7000000000000000
2005-01-01	4.9000000000000000
2006-01-01	5.7000000000000000
2007-01-01	6.2000000000000000
2008-01-01	5.5000000000000000
2009-01-01	5.5000000000000000
2010-01-01	5.4322099999999995
2011-01-01	5.0536699999999990
2012-01-01	5.2656100000000000
2013-01-01	7.0614899999999990
2014-01-01	7.3134000000000000
2015-01-01	7.7908000000000000
2016-01-01	7.3974899999999995