Year	Percent
1996-01-01	2.5196900000000000
1997-01-01	2.4621900000000000
1998-01-01	2.2536400000000003
1999-01-01	2.2468200000000000
2000-01-01	2.2443400000000002
2001-01-01	2.0749299999999997
2002-01-01	1.9569000000000000
2003-01-01	2.0845700000000003
2004-01-01	2.1856600000000000
2005-01-01	2.3707200000000000
2006-01-01	2.6076200000000003
2007-01-01	2.4768700000000000
2008-01-01	2.3285200000000000
2009-01-01	2.2242400000000000
2010-01-01	2.4030800000000000
2011-01-01	2.2417000000000000
2012-01-01	2.2448400000000000
2013-01-01	2.2565000000000000
2014-01-01	2.0848500000000000
2015-01-01	1.9979799999999999
2016-01-01	2.2472900000000000